Cellbig

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Details

Founded:
2021
Hourly Rates:
Undisclosed
Employees:
2 - 9
Ratings:
4.2 8 Reviews

Industries Served

Insurance Healthcare Financial Services Fashion & Apparel Manufacturing Pharmaceuticals & Biotechnology Retail & E-commerce Construction

Where We Specialize

15% Web Development
Web Development 15%
Software Development 15%
IoT Development 15%
Web Design 13%
Mobile App Development 11%
Text Analytics 11%
Implementation Services 10%
Rust 8%
Big Data Analytics 2%

Industry Expertise

Entertainment72% Healthcare28%

Typical Project Size

40% Small Business
38% Enterprise
22% Midmarket Business

About

Cellbig works with clients to plan, build, and ship digital products. The company's main offerings are AR/VR Development and Mobile App Development. With 2 - 9 people on staff, Cellbig can take on projects of varying size. Cellbig operates out of Seongdong-gu, South Korea. This profile is a starting point — reach out to Cellbig directly to discuss project specifics.

Cellbig Reviews

4.2 8 Reviews
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Great Experience With Cellbig on Our IoT Development Project

Kevin Nguyen / Product Manager | Jun 25, 2026

We were very happy with how this project went. 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. 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 IoT Development work has already made a noticeable difference — tasks that used to take hours now take minutes.

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

Project summary

We engaged Cellbig to build firmware and a companion app for a smart device we were launching. They worked alongside our in-house team, which mostly handled business requirements and testing. We worked together for around 8 months.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
IoT Development
Project Cost:
$150,000 to $499,999
Project Duration:
Sep 2025 - May 2026
Business Type:
Insurance
Location:
Chicago, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Maple Underwriters is a Insurance business in Chicago, USA. As Product Manager, I was responsible for this project on our side and the main contact for Cellbig.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to build firmware and a companion app for a smart device we were launching before our busy season.
What services did the company provide for your project?
End-to-end IoT 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 Insurance and their proposal was the clearest of the ones we received.
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?
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?
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, I've already recommended them to a couple of people I know.

Good results, communication improved as the project went on

Sneha Mehta / Senior Engineering Manager | Apr 29, 2026

Overall the project was a success, though it was not without some challenges. They shared working builds regularly, so we could test early and give feedback before things were locked in. 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. 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 hired Cellbig to build iOS and Android apps for our customers, including booking, payments and push notifications. Their team handled planning, development and QA, with our product owner signing off each milestone. The engagement ran for about 6 months.

  • Overall Rating 3.5
  • Quality 3.5
  • Schedule 3.5
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$500,000+
Project Duration:
Oct 2025 - Apr 2026
Business Type:
Healthcare
Location:
Hyderabad, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Senior Engineering Manager at Ironwood Wellness Pvt Ltd, a Healthcare company based in Hyderabad, India. 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 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?
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?
It was delivered on time, and the final invoice matched the original estimate.
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?
Definitely. We have already started talking about the next phase.

Would happily work with them again

Megan Miller / Owner | Apr 20, 2026

Our experience with Cellbig was really positive from start to finish. Their project manager kept things organised and was quick to flag anything that might affect the timeline. 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 are already discussing the next phase with them.

Project summary

Our company worked with Cellbig to redesign the user experience of our SaaS product. They worked alongside our in-house team, which mostly handled business requirements and testing. 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:
UI/UX Design
Project Cost:
$10,000 to $49,999
Project Duration:
Nov 2025 - Feb 2026
Business Type:
Financial Services
Location:
Boston, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Financial Services company based in Boston, USA. I'm the Owner 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 redesign the user experience of our SaaS product before our busy season.
What services did the company provide for your project?
End-to-end UI/UX Design — 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. Cellbig 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?
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.

Solid delivery, though timelines needed some pushing

Lachlan Taylor / Director of Technology | Mar 13, 2026

The final product works well for us, although the process could have been smoother. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building.

Feedback from our customers has been very positive so far. 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

Our company worked with Cellbig to help us choose and plan the rollout of a new core system. The project was split into milestones, with a working build shared at the end of each one. Overall it was a 9-month engagement.

  • Overall Rating 3.5
  • Quality 3.5
  • Schedule 4.0
  • Project Cost 4.0
  • Willing To Refer 5.0
Project Type:
IT Consulting
Project Cost:
$500,000+
Project Duration:
May 2025 - Feb 2026
Business Type:
Fashion & Apparel
Location:
Adelaide, Australia

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Fashion & Apparel company based in Adelaide, Australia. I'm the Director of Technology 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 help us choose and plan the rollout of a new core system before our busy season.
What services did the company provide for your project?
Mainly IT Consulting. 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?
We compared three or four agencies. Cellbig 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 Fashion & Apparel clients before.
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?
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.

They listened, asked the right questions, and delivered

Divya Bose / CEO | Feb 09, 2026

We were very happy with how this project went. 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.

It has made a real difference to how our team works day to day.

We are already discussing the next phase with them.

Project summary

We hired Cellbig to build iOS and Android apps for our customers, including booking, payments and push notifications. The project was split into milestones, with a working build shared at the end of each one. The engagement ran for about 4 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:
Sep 2025 - Jan 2026
Business Type:
Manufacturing
Location:
Gurugram, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Stonebridge Industries Pvt Ltd is a Manufacturing business in Gurugram, India. As CEO, I was responsible for this project on our side and the main contact for Cellbig.
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 iOS and Android apps for our customers, including booking, payments and push notifications.
What services did the company provide for your project?
Mobile App Development, including planning, development, testing and launch support.
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?
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?
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, on time and within budget.
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?
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.

Exceeded our expectations on quality and communication

Derek Foster / Co-Founder & CTO | Feb 09, 2026

The project went well overall. 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. Their project manager kept things organised and was quick to flag anything that might affect the timeline.

The Mobile App Development work has already made a noticeable difference — tasks that used to take hours now take minutes. Their team changed one developer midway, which slowed things down for a couple of weeks. We are already discussing the next phase with them.

Project summary

Cellbig 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 5 months.

  • Overall Rating 4.0
  • Quality 4.0
  • Schedule 4.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$10,000 to $49,999
Project Duration:
Aug 2025 - Jan 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 Co-Founder & CTO and I oversaw the project from start to finish.
What specific problem or business challenge led you to hire this company?
We needed to rebuild our existing mobile app, which had poor reviews and frequent crashes, 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?
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?
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?
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?
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?
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?
Definitely. We have already started talking about the next phase.

Strong Technical Skills and a Very Responsive Web Development Team

Harry Lloyd / Chief Digital Officer | Jan 14, 2026

Cellbig did good work for us, and we would use them again. 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.

We are already seeing better numbers than before the project. We had to follow up a few times on smaller bug fixes after launch. We would definitely work with them again.

Project summary

Cellbig was brought in to rebuild a slow, outdated web app and move it to a new framework. They worked alongside our in-house team, which mostly handled business requirements and testing. Overall it was a 3-month engagement.

  • Overall Rating 4.0
  • Quality 4.0
  • Schedule 4.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Web Development
Project Cost:
$500,000+
Project Duration:
Aug 2025 - Nov 2025
Business Type:
Retail & E-commerce
Location:
Leeds, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Chief Digital Officer at Bridgewater Retail Ltd, a Retail & E-commerce company based in Leeds, 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?
Our existing setup was holding us back. We wanted to rebuild a slow, outdated web app and move it to a new framework before our busy season.
What services did the company provide for your project?
End-to-end Web 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?
They understood our goals quickly, partly because they had worked with Retail & E-commerce clients before.
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?
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

Priya Reed / Product Manager | Jan 12, 2026

Cellbig did good work for us, and we would use them again. 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. They were upfront about what was realistic within our budget, which helped us prioritise the right features.

We are already seeing better numbers than before the project. Estimates on a few features were optimistic and those took longer than planned.

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

Project summary

Our company worked with Cellbig to rebuild our existing mobile app, which had poor reviews and frequent crashes. The project was split into milestones, with a working build shared at the end of each one. We worked together for around 7 months.

  • Overall Rating 4.0
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 4.0
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$50,000 to $149,999
Project Duration:
May 2025 - Dec 2025
Business Type:
Construction
Location:
San Jose, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Product Manager at Bluepeak Contracting. We operate in Construction and most of our customers are in and around San Jose, USA.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to rebuild our existing mobile app, which had poor reviews and frequent crashes before our busy season.
What services did the company provide for your project?
Mobile App Development, including planning, development, testing and launch support.
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?
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?
It was delivered on time, and the final invoice matched the original estimate.
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, I would recommend them and we plan to work with them again.
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