Zwellio

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Details

Founded:
2017
Hourly Rates:
$25 - $49 / hr
Employees:
2 - 9
Ratings:
4.8 10 Reviews

Industries Served

Environmental Services Pharmaceuticals & Biotechnology Human Resources Government & Public Sector Food & Beverage Telecommunications Travel & Hospitality Fashion & Apparel

Where We Specialize

25% React Native
React Native 25%
Mobile App Development 18%
Software Development 17%
OpenAI 16%
AI Development 11%
Web Development 9%
Bot Development 4%

Industry Expertise

Sports100%

Typical Project Size

50% Midmarket Business
44% Small Business
6% Enterprise

About

Since 2017, Zwellio has operated as a technology services provider. Their core services include Web Development and Mobile App Development. Its team includes 2 - 9 specialists working across design, development, and delivery. Typical hourly rates run around $25 - $49 / hr/hr. The team is based in Cluj-Napoca, Romania. Overall, Zwellio is one of the options worth shortlisting for a technology project.

Zwellio Reviews

4.8 10 Reviews
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They listened, asked the right questions, and delivered

Derek Hayes / Director | Sep 10, 2026

We were very happy with how this project went. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. We dealt with the same core team throughout, so we did not have to keep re-explaining things. The developers were knowledgeable and made a few suggestions that ended up saving us time and money.

Since launch, everything has been stable and our team has adapted to it quickly. I would recommend Zwellio to anyone looking for a dependable Web Development partner.

Project summary

We partnered with Zwellio to build a customer portal where clients can log in, track orders and download invoices. They also took care of integrations with a couple of third-party tools we already used. The project took roughly 3 months from kickoff to launch.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Web Development
Project Cost:
$10,000 to $49,999
Project Duration:
May 2026 - Aug 2026
Business Type:
Environmental Services
Location:
Nashville, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Environmental Services company based in Nashville, USA. I'm the Director and I oversaw the project from start to finish.
What specific problem or business challenge led you to hire this company?
Our team was spending too much time on manual work. The goal was to build a customer portal where clients can log in, track orders and download invoices so they could focus on customers.
What services did the company provide for your project?
Mainly Web Development. They also helped with the technical planning and a few integrations with our existing tools.
Why did you choose this company over other providers you considered?
A colleague recommended them, and our first calls confirmed they understood what we needed.
How clearly did the company understand your requirements and business goals?
Well. There were a couple of points we had to clarify early on, but after that they were spot on.
How was your overall experience with their communication and project management?
Very responsive. We usually heard back the same day, even with the time difference.
Did the company deliver the project on time and within your expected budget?
Yes. The only extra cost came from features we added ourselves, and they quoted those fairly.
What tangible results or business impact have you seen since the project was completed?
It is still early, but the numbers are trending in the right direction and the system has been stable.
What did you like most about working with this company?
That they were proactive — they suggested improvements instead of just doing what was asked.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.

Exceeded our expectations on quality and communication

Derek Reed / Founder & CEO | Sep 06, 2026

Zwellio did good work for us, and we would use them again. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. They shared working builds regularly, so we could test early and give feedback before things were locked in.

We launched on schedule and have not had any major issues since. Their team changed one developer midway, which slowed things down for a couple of weeks. If you need a team that communicates well and delivers, they are a good choice.

Project summary

We engaged Zwellio to develop a scheduling and dispatch tool for our field team. They also took care of integrations with a couple of third-party tools we already used. The engagement ran for about 7 months.

  • Overall Rating 4.0
  • Quality 3.5
  • Schedule 4.0
  • Project Cost 4.0
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$10,000 to $49,999
Project Duration:
Dec 2025 - Jul 2026
Business Type:
Pharmaceuticals & Biotechnology
Location:
Charlotte, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Pharmaceuticals & Biotechnology company based in Charlotte, USA. I'm the Founder & CEO and I oversaw the project from start to finish.
What specific problem or business challenge led you to hire this company?
We needed to develop a scheduling and dispatch tool for our field team, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
End-to-end Software Development — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
They had relevant experience in Pharmaceuticals & Biotechnology and their proposal was the clearest of the ones we received.
How clearly did the company understand your requirements and business goals?
Well. There were a couple of points we had to clarify early on, but after that they were spot on.
How was your overall experience with their communication and project management?
Very responsive. We usually heard back the same day, even with the time difference.
Did the company deliver the project on time and within your expected budget?
Yes. The only extra cost came from features we added ourselves, and they quoted those fairly.
What tangible results or business impact have you seen since the project was completed?
We can now handle more volume without adding staff, which was the main goal.
What did you like most about working with this company?
Their attention to detail and the quality of the final product.
Would you recommend this company to others, and would you work with them again?
Yes, I would recommend them and we plan to work with them again.

Great team to work with — professional, responsive and reliable

Huda Al Zahrani / CEO | Sep 03, 2026

Zwellio did an excellent job for us. They shared working builds regularly, so we could test early and give feedback before things were locked in. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building.

The result looks great and performs well, and our internal team found it easy to take over.

Overall, a team we trust and plan to keep working with.

Project summary

Our company worked with Zwellio to build a custom operations platform to replace the spreadsheets and email threads we were running the business on. The work covered requirements, design, development, testing and launch support. The project took roughly 9 months from kickoff to launch.

  • Overall Rating 4.5
  • Quality 4.0
  • Schedule 5.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$10,000 to $49,999
Project Duration:
Oct 2025 - Jul 2026
Business Type:
Human Resources
Location:
Dammam, Saudi Arabia

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Human Resources company based in Dammam, Saudi Arabia. I'm the CEO and I oversaw the project from start to finish.
What specific problem or business challenge led you to hire this company?
Our team was spending too much time on manual work. The goal was to build a custom operations platform to replace the spreadsheets and email threads we were running the business on so they could focus on customers.
What services did the company provide for your project?
End-to-end Software Development — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
We compared three or four agencies. Zwellio asked the best questions and had good reviews from past clients.
How clearly did the company understand your requirements and business goals?
Well. There were a couple of points we had to clarify early on, but after that they were spot on.
How was your overall experience with their communication and project management?
Good. Weekly calls, regular updates and a shared board meant we always knew where things stood.
Did the company deliver the project on time and within your expected budget?
Yes, on time and within budget.
What tangible results or business impact have you seen since the project was completed?
Our team saves several hours a week, and we have had very few issues since launch.
What did you like most about working with this company?
How easy they were to work with. They were responsive, honest and genuinely interested in our success.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.

Skilled Software Development Team That Understood Our Business

Dan Fisher / Co-Founder | Aug 13, 2026

I would rate this engagement highly on almost every front. We dealt with the same core team throughout, so we did not have to keep re-explaining things. They shared working builds regularly, so we could test early and give feedback before things were locked in.

Feedback from our customers has been very positive so far.

Happy to recommend them.

Project summary

Zwellio was brought in to rebuild an internal order management system that had outgrown its original design. The project was split into milestones, with a working build shared at the end of each one. Overall it was a 5-month engagement.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$10,000 to $49,999
Project Duration:
Feb 2026 - Jul 2026
Business Type:
Government & Public Sector
Location:
Columbus, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Co-Founder at Cobalt Public Services LLC, a Government & Public Sector company based in Columbus, USA. I look after our technology and work closely with outside partners on bigger projects.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to rebuild an internal order management system that had outgrown its original design before our busy season.
What services did the company provide for your project?
Software Development, plus QA and some consulting on how to structure the project.
Why did you choose this company over other providers you considered?
They had relevant experience in Government & Public Sector and their proposal was the clearest of the ones we received.
How clearly did the company understand your requirements and business goals?
Well. There were a couple of points we had to clarify early on, but after that they were spot on.
How was your overall experience with their communication and project management?
Communication was good overall and improved further once we settled into a routine.
Did the company deliver the project on time and within your expected budget?
Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.
What tangible results or business impact have you seen since the project was completed?
Customer feedback has been positive, and we have seen better engagement since going live.
What did you like most about working with this company?
Their attention to detail and the quality of the final product.
Would you recommend this company to others, and would you work with them again?
Yes. They are a reliable Software Development partner.

Good value and a team that genuinely cares about the result

Brandon Miller / Director of Technology | May 22, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. The developers were knowledgeable and made a few suggestions that ended up saving us time and money. Their project manager kept things organised and was quick to flag anything that might affect the timeline.

We launched on schedule and have not had any major issues since.

I would recommend Zwellio to anyone looking for a dependable AI & Machine Learning partner.

Project summary

Zwellio was brought in to add an AI chatbot to our support site that answers questions from our help docs. The project was split into milestones, with a working build shared at the end of each one. We worked together for around 9 months.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$500,000+
Project Duration:
Jun 2025 - Mar 2026
Business Type:
Food & Beverage
Location:
Austin, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Clearfield Coffee is a Food & Beverage business in Austin, USA. As Director of Technology, I was responsible for this project on our side and the main contact for Zwellio.
What specific problem or business challenge led you to hire this company?
We had tried to do this internally and it stalled. We needed specialists to add an AI chatbot to our support site that answers questions from our help docs.
What services did the company provide for your project?
AI & Machine Learning, including planning, development, testing and launch support.
Why did you choose this company over other providers you considered?
We compared three or four agencies. Zwellio asked the best questions and had good reviews from past clients.
How clearly did the company understand your requirements and business goals?
Better than we expected. They pointed out a few things we had not thought about.
How was your overall experience with their communication and project management?
Communication was good overall and improved further once we settled into a routine.
Did the company deliver the project on time and within your expected budget?
Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.
What tangible results or business impact have you seen since the project was completed?
We can now handle more volume without adding staff, which was the main goal.
What did you like most about working with this company?
How easy they were to work with. They were responsive, honest and genuinely interested in our success.
Would you recommend this company to others, and would you work with them again?
Yes. They are a reliable AI & Machine Learning partner.

Strong Technical Skills and a Very Responsive AI & Machine Learning Team

Maya MacDonald / Founder | May 20, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. Even with the time zone difference, responses usually came the same day and we never felt left in the dark. They were upfront about what was realistic within our budget, which helped us prioritise the right features.

The AI & Machine Learning work has already made a noticeable difference — tasks that used to take hours now take minutes. Overall, a team we trust and plan to keep working with.

Project summary

Zwellio was brought in to automate document data extraction that our team was doing by hand. They worked alongside our in-house team, which mostly handled business requirements and testing. Overall it was a 2-month engagement.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$10,000 to $49,999
Project Duration:
Jan 2026 - Mar 2026
Business Type:
Government & Public Sector
Location:
Vancouver, Canada

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Government & Public Sector company based in Vancouver, Canada. I'm the Founder and I oversaw the project from start to finish.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to automate document data extraction that our team was doing by hand before our busy season.
What services did the company provide for your project?
End-to-end AI & Machine Learning — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.
How clearly did the company understand your requirements and business goals?
Well. There were a couple of points we had to clarify early on, but after that they were spot on.
How was your overall experience with their communication and project management?
Organised and transparent. Their project manager kept the project on track and flagged risks early.
Did the company deliver the project on time and within your expected budget?
Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.
What tangible results or business impact have you seen since the project was completed?
Our team saves several hours a week, and we have had very few issues since launch.
What did you like most about working with this company?
Their attention to detail and the quality of the final product.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.

Professional Mobile App Development Team, Smooth Delivery From Start to Finish

Jason Morgan / Senior Product Manager | May 18, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. They were upfront about what was realistic within our budget, which helped us prioritise the right features. We dealt with the same core team throughout, so we did not have to keep re-explaining things.

We are already seeing better numbers than before the project.

If you need a team that communicates well and delivers, they are a good choice.

Project summary

Zwellio was brought in to rebuild our existing mobile app, which had poor reviews and frequent crashes. Their team handled planning, development and QA, with our product owner signing off each milestone. The engagement ran for about 3 months.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$500,000+
Project Duration:
Feb 2026 - May 2026
Business Type:
Pharmaceuticals & Biotechnology
Location:
Phoenix, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Senior Product Manager at Maple Bio, a Pharmaceuticals & Biotechnology company based in Phoenix, USA. I look after our technology and work closely with outside partners on bigger projects.
What specific problem or business challenge led you to hire this company?
We had tried to do this internally and it stalled. We needed specialists to rebuild our existing mobile app, which had poor reviews and frequent crashes.
What services did the company provide for your project?
End-to-end Mobile App Development — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
We compared three or four agencies. Zwellio asked the best questions and had good reviews from past clients.
How clearly did the company understand your requirements and business goals?
They understood our goals quickly, partly because they had worked with Pharmaceuticals & Biotechnology clients before.
How was your overall experience with their communication and project management?
Organised and transparent. Their project manager kept the project on track and flagged risks early.
Did the company deliver the project on time and within your expected budget?
Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.
What tangible results or business impact have you seen since the project was completed?
Customer feedback has been positive, and we have seen better engagement since going live.
What did you like most about working with this company?
That they were proactive — they suggested improvements instead of just doing what was asked.
Would you recommend this company to others, and would you work with them again?
Yes, I would recommend them and we plan to work with them again.

Delivered on time and stayed involved after launch

Matt Tremblay / Co-Founder | May 17, 2026

Zwellio did an excellent job for us. They were upfront about what was realistic within our budget, which helped us prioritise the right features. Even with the time zone difference, responses usually came the same day and we never felt left in the dark. When we changed our minds on a couple of features halfway through, they handled it without fuss and were clear about the impact on cost and timeline.

Feedback from our customers has been very positive so far.

I would recommend Zwellio to anyone looking for a dependable Mobile App Development partner.

Project summary

We partnered with Zwellio to build iOS and Android apps for our customers, including booking, payments and push notifications. Scope included discovery workshops, development in two-week sprints and a short support period after launch. The engagement ran for about 8 months.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$10,000 to $49,999
Project Duration:
Aug 2025 - Apr 2026
Business Type:
Telecommunications
Location:
Toronto, Canada

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Telecommunications company based in Toronto, Canada. I'm the Co-Founder and I oversaw the project from start to finish.
What specific problem or business challenge led you to hire this company?
We needed to build iOS and Android apps for our customers, including booking, payments and push notifications, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
End-to-end Mobile App Development — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
A colleague recommended them, and our first calls confirmed they understood what we needed.
How clearly did the company understand your requirements and business goals?
Very well. They asked a lot of questions upfront and turned our rough ideas into a clear plan.
How was your overall experience with their communication and project management?
Communication was good overall and improved further once we settled into a routine.
Did the company deliver the project on time and within your expected budget?
Yes, on time and within budget.
What tangible results or business impact have you seen since the project was completed?
Our team saves several hours a week, and we have had very few issues since launch.
What did you like most about working with this company?
Their attention to detail and the quality of the final product.
Would you recommend this company to others, and would you work with them again?
Yes. They are a reliable Mobile App Development partner.

Would happily work with them again

Rob Harding / Founder & CEO | Apr 06, 2026

Our experience with Zwellio was really positive from start to finish. When we changed our minds on a couple of features halfway through, they handled it without fuss and were clear about the impact on cost and timeline. The developers were knowledgeable and made a few suggestions that ended up saving us time and money. Even with the time zone difference, responses usually came the same day and we never felt left in the dark.

Feedback from our customers has been very positive so far. We would definitely work with them again.

Project summary

Our company worked with Zwellio to develop a scheduling and dispatch tool for our field team. They also took care of integrations with a couple of third-party tools we already used. We worked together for around 3 months.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 4.5
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$50,000 to $149,999
Project Duration:
Dec 2025 - Mar 2026
Business Type:
Travel & Hospitality
Location:
Birmingham, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Founder & CEO at Pioneer Travel, a Travel & Hospitality company based in Birmingham, UK. I look after our technology and work closely with outside partners on bigger projects.
What specific problem or business challenge led you to hire this company?
We had tried to do this internally and it stalled. We needed specialists to develop a scheduling and dispatch tool for our field team.
What services did the company provide for your project?
End-to-end Software Development — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
They had relevant experience in Travel & Hospitality and their proposal was the clearest of the ones we received.
How clearly did the company understand your requirements and business goals?
Better than we expected. They pointed out a few things we had not thought about.
How was your overall experience with their communication and project management?
Communication was good overall and improved further once we settled into a routine.
Did the company deliver the project on time and within your expected budget?
Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.
What tangible results or business impact have you seen since the project was completed?
Customer feedback has been positive, and we have seen better engagement since going live.
What did you like most about working with this company?
That they were proactive — they suggested improvements instead of just doing what was asked.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.

Zwellio Delivered a Quality Software Development Solution on Time

Noura Saleh / Head of Engineering | Feb 12, 2026

I would rate this engagement highly on almost every front. Their project manager kept things organised and was quick to flag anything that might affect the timeline. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time.

We are already seeing better numbers than before the project. Overall, a team we trust and plan to keep working with.

Project summary

We engaged Zwellio to build a custom operations platform to replace the spreadsheets and email threads we were running the business on. Scope included discovery workshops, development in two-week sprints and a short support period after launch. We worked together for around 6 months.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 4.5
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$50,000 to $149,999
Project Duration:
Jul 2025 - Jan 2026
Business Type:
Fashion & Apparel
Location:
Dubai, UAE

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Head of Engineering at Trueline Fashion LLC. We operate in Fashion & Apparel and most of our customers are in and around Dubai, UAE.
What specific problem or business challenge led you to hire this company?
We had tried to do this internally and it stalled. We needed specialists to build a custom operations platform to replace the spreadsheets and email threads we were running the business on.
What services did the company provide for your project?
Software Development, plus QA and some consulting on how to structure the project.
Why did you choose this company over other providers you considered?
Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.
How clearly did the company understand your requirements and business goals?
Well. There were a couple of points we had to clarify early on, but after that they were spot on.
How was your overall experience with their communication and project management?
Organised and transparent. Their project manager kept the project on track and flagged risks early.
Did the company deliver the project on time and within your expected budget?
Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.
What tangible results or business impact have you seen since the project was completed?
It is still early, but the numbers are trending in the right direction and the system has been stable.
What did you like most about working with this company?
The consistency. Same team, same standard, from the first week to the last.
Would you recommend this company to others, and would you work with them again?
Yes. They are a reliable Software Development partner.
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