Zelarus

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Details

Founded:: 2002
Hourly Rates:: Undisclosed
Employees:: 2 - 9
Ratings:: 4.3 9 Reviews

Industries Served

Media & Entertainment Aerospace & Defense Retail & E-commerce Logistics & Supply Chain Advertising & Marketing Pharmaceuticals & Biotechnology Events & Event Management

Where We Specialize

22% Bot Development

Bot Development 22%

Cross Platform 20%

Mobile App Development 17%

Web Development 16%

AI Development 14%

Software Development 11%

Industry Expertise

Entertainment74% Manufacturing26%

Typical Project Size

48% Midmarket Business

42% Enterprise

10% Small Business

About

Zelarus works with clients to plan, build, and ship digital products. Zelarus builds web and mobile products, plus custom software for clients with specific needs. Its team includes 2 - 9 specialists working across design, development, and delivery. Their home base is Rosario, Argentina. Overall, Zelarus is one of the options worth shortlisting for a technology project.

Zelarus Reviews

4.3 9 Reviews

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Solid delivery, though timelines needed some pushing

Lukas Koch / Managing Director | Sep 17, 2026

Overall the project was a success, though it was not without some challenges. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. 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. Even with the time zone difference, responses usually came the same day and we never felt left in the dark.

It has made a real difference to how our team works day to day. We had to follow up a few times on smaller bug fixes after launch. Happy to recommend them.

Project summary

Zelarus was brought in to develop a field-staff app with offline mode that syncs back to our main system. The work covered requirements, design, development, testing and launch support. The project took roughly 5 months from kickoff to launch.

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:: $10,000 to $49,999
Project Duration:: Mar 2026 - Aug 2026
Business Type:: Media & Entertainment
Location:: Hamburg, Germany

Questions & Answers

Please describe your company, your role, and the industry you operate in.

Blue Harbor Pictures GmbH is a Media & Entertainment business in Hamburg, Germany. As Managing Director, I was responsible for this project on our side and the main contact for Zelarus.

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 develop a field-staff app with offline mode that syncs back to our main system so they could focus on customers.

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. Zelarus asked the best questions and had good reviews from past clients.

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, I've already recommended them to a couple of people I know.

Great Experience With Zelarus on Our AI & Machine Learning Project

Andre Johnson / Chief Digital Officer | Jun 18, 2026

The project went well overall. They shared working builds regularly, so we could test early and give feedback before things were locked in. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. The developers were knowledgeable and made a few suggestions that ended up saving us time and money.

It has made a real difference to how our team works day to day. There were some early misunderstandings on requirements that took a few rounds to sort out. We would definitely work with them again.

Project summary

Zelarus was brought in to add an AI chatbot to our support site that answers questions from our help docs. Scope included discovery workshops, development in two-week sprints and a short support period after launch. The engagement ran for about 6 months.

Overall Rating 4.0
Quality 4.5
Schedule 4.0
Project Cost 4.0
Willing To Refer 5.0

Project Type:: AI & Machine Learning
Project Cost:: $500,000+
Project Duration:: Oct 2025 - Apr 2026
Business Type:: Aerospace & Defense
Location:: Seattle, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.

We're a mid-sized Aerospace & Defense company based in Seattle, USA. I'm the Chief Digital Officer and I oversaw the project from start to finish.

What specific problem or business challenge led you to hire this company?

We needed to add an AI chatbot to our support site that answers questions from our help docs, and we didn't have the in-house capacity to do it ourselves.

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. Zelarus 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?

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?

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?

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?

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.

Reliable Software Development Partner That Delivered What They Promised

Saud Al Harbi / IT Director | May 17, 2026

We were happy with the final result. The developers were knowledgeable and made a few suggestions that ended up saving us time and money. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building.

Since launch, everything has been stable and our team has adapted to it quickly. There were some early misunderstandings on requirements that took a few rounds to sort out. If you need a team that communicates well and delivers, they are a good choice.

Project summary

Our company worked with Zelarus to develop a scheduling and dispatch tool for our field team. They worked alongside our in-house team, which mostly handled business requirements and testing. The project took roughly 7 months from kickoff to launch.

Overall Rating 4.0
Quality 4.5
Schedule 4.0
Project Cost 4.0
Willing To Refer 5.0

Project Type:: Software Development
Project Cost:: $500,000+
Project Duration:: Sep 2025 - Apr 2026
Business Type:: Retail & E-commerce
Location:: Dammam, Saudi Arabia

Questions & Answers

Please describe your company, your role, and the industry you operate in.

I work as IT Director at Bluepeak Store Co. We operate in Retail & E-commerce and most of our customers are in and around Dammam, Saudi Arabia.

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 develop a scheduling and dispatch tool for our field team so they could focus on customers.

What services did the company provide for your project?

Software Development, including planning, development, testing and launch support.

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?

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?

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?

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?

Definitely. We have already started talking about the next phase.

Exceeded our expectations on quality and communication

Julie Gagnon / Owner | Mar 10, 2026

We were happy with the final result. The developers were knowledgeable and made a few suggestions that ended up saving us time and money. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. We dealt with the same core team throughout, so we did not have to keep re-explaining things.

We launched on schedule and have not had any major issues since. A couple of milestones slipped by a week or so, mostly around testing. We would definitely work with them again.

Project summary

We engaged Zelarus 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. The engagement ran for about 5 months.

Overall Rating 4.0
Quality 4.5
Schedule 4.0
Project Cost 4.5
Willing To Refer 5.0

Project Type:: Software Development
Project Cost:: $10,000 to $49,999
Project Duration:: Sep 2025 - Feb 2026
Business Type:: Logistics & Supply Chain
Location:: Ottawa, Canada

Questions & Answers

Please describe your company, your role, and the industry you operate in.

I work as Owner at Lumen Transport. We operate in Logistics & Supply Chain and most of our customers are in and around Ottawa, Canada.

What specific problem or business challenge led you to hire this company?

We needed to rebuild an internal order management system that had outgrown its original design, and we didn't have the in-house capacity to do it ourselves.

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?

We compared three or four agencies. Zelarus 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?

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?

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. They are a reliable Software Development partner.

A reliable long-term partner for our tech needs

Rahul Nair / Marketing Director | Mar 03, 2026

Our experience with Zelarus was really positive from start to finish. Even with the time zone difference, responses usually came the same day and we never felt left in the dark. 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. Happy to recommend them.

Project summary

Our company worked with Zelarus to automate document data extraction that our team was doing by hand. Scope included discovery workshops, development in two-week sprints and a short support period after launch. We worked together for around 9 months.

Overall Rating 4.5
Quality 4.5
Schedule 4.5
Project Cost 4.0
Willing To Refer 5.0

Project Type:: AI & Machine Learning
Project Cost:: $50,000 to $149,999
Project Duration:: Mar 2025 - Dec 2025
Business Type:: Media & Entertainment
Location:: Gurugram, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.

We're a mid-sized Media & Entertainment company based in Gurugram, India. I'm the Marketing Director 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?

Mainly AI & Machine Learning. 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. Zelarus 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?

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?

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.

Easy to work with and very transparent on timelines and cost

Mitch Martin / Owner | Feb 14, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. We dealt with the same core team throughout, so we did not have to keep re-explaining things. 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

Our company worked with Zelarus to automate document data extraction that our team was doing by hand. The project was split into milestones, with a working build shared at the end of each one. We worked together for around 8 months.

Overall Rating 4.5
Quality 4.5
Schedule 5.0
Project Cost 4.5
Willing To Refer 5.0

Project Type:: AI & Machine Learning
Project Cost:: $10,000 to $49,999
Project Duration:: May 2025 - Jan 2026
Business Type:: Advertising & Marketing
Location:: Gold Coast, Australia

Questions & Answers

Please describe your company, your role, and the industry you operate in.

I work as Owner at Maple Marketing. We operate in Advertising & Marketing and most of our customers are in and around Gold Coast, Australia.

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?

They had relevant experience in Advertising & Marketing 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?

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.

Dependable Web Development Partner for a Growing Pharmaceuticals & Biotechnology Business

Julia Schmidt / IT Manager | Feb 13, 2026

Our experience with Zelarus was really positive from start to finish. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later.

Since launch, everything has been stable and our team has adapted to it quickly. Overall, a team we trust and plan to keep working with.

Project summary

Zelarus was brought in to redesign and rebuild our company website on a modern stack. Scope included discovery workshops, development in two-week sprints and a short support period after launch. The project took roughly 3 months from kickoff to launch.

Overall Rating 5.0
Quality 5.0
Schedule 5.0
Project Cost 5.0
Willing To Refer 5.0

Project Type:: Web Development
Project Cost:: $50,000 to $149,999
Project Duration:: Oct 2025 - Jan 2026
Business Type:: Pharmaceuticals & Biotechnology
Location:: Munich, Germany

Questions & Answers

Please describe your company, your role, and the industry you operate in.

We're a mid-sized Pharmaceuticals & Biotechnology company based in Munich, Germany. I'm the IT Manager and I oversaw the project from start to finish.

What specific problem or business challenge led you to hire this company?

We needed to redesign and rebuild our company website on a modern stack, and we didn't have the in-house capacity to do it ourselves.

What services did the company provide for your project?

Web 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 Pharmaceuticals & Biotechnology and their proposal was the clearest of the ones we received.