Data Theorem, Inc.

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Details

Founded:
2013
Hourly Rates:
Undisclosed
Employees:
50 - 249
Ratings:
4.5 9 Reviews

Industries Served

Media & Entertainment Events & Event Management Human Resources Government & Public Sector Mining & Metals Real Estate Telecommunications Healthcare

Where We Specialize

14% Mobile App Development
Mobile App Development 14%
AI Development 14%
Web3 14%
Web Development 13%
Web Design 13%
E-commerce Development 12%
Progressive Web App 12%
Software Development 4%
Sitecore 4%

Industry Expertise

Restaurant88% Food12%

Typical Project Size

42% Small Business
39% Midmarket Business
19% Enterprise

About

Data Theorem, Inc. is a technology company founded in 2013. The company's main offerings are Mobile App Development. Data Theorem, Inc. employs 50 - 249 people. The team is based in Paris, France. This gives a quick snapshot of what to expect when working with Data Theorem, Inc.

Data Theorem, Inc. Reviews

4.5 9 Reviews
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Honest advice and solid execution

Liam Leblanc / Co-Founder | Oct 06, 2026

The project went well overall. 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. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time.

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. We are already discussing the next phase with them.

Project summary

We engaged Data Theorem, Inc. to redesign and rebuild our company website on a modern stack. Their team handled planning, development and QA, with our product owner signing off each milestone. Overall it was a 7-month engagement.

  • Overall Rating 4.0
  • Quality 4.0
  • Schedule 3.5
  • Project Cost 4.0
  • Willing To Refer 5.0
Project Type:
Web Development
Project Cost:
$10,000 to $49,999
Project Duration:
Jan 2026 - Aug 2026
Business Type:
Media & Entertainment
Location:
Toronto, Canada

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Co-Founder at Westbridge Studios Inc, a Media & Entertainment company based in Toronto, Canada. 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 team was spending too much time on manual work. The goal was to redesign and rebuild our company website on a modern stack so they could focus on customers.
What services did the company provide for your project?
Web Development, including planning, development, testing and launch support.
Why did you choose this company over other providers you considered?
We compared three or four agencies. Data Theorem, Inc. 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?
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?
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?
Definitely. We have already started talking about the next phase.

They listened, asked the right questions, and delivered

Rachel Wong / CTO | Sep 20, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. 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.

Since launch, everything has been stable and our team has adapted to it quickly. Happy to recommend them.

Project summary

Data Theorem, Inc. was brought in to build a Shopify store with custom features for our product range. Scope included discovery workshops, development in two-week sprints and a short support period after launch. The engagement ran for about 5 months.

  • Overall Rating 5.0
  • Quality 4.5
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
E-commerce Development
Project Cost:
$50,000 to $149,999
Project Duration:
Apr 2026 - Sep 2026
Business Type:
Events & Event Management
Location:
Singapore

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as CTO at Copper Leaf Productions Pte Ltd. We operate in Events & Event Management and most of our customers are in and around Singapore.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to build a Shopify store with custom features for our product range before our busy season.
What services did the company provide for your project?
E-commerce 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?
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?
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.

Good value and a team that genuinely cares about the result

Aoife O'Connor / Director | Sep 18, 2026

The project went well overall. We dealt with the same core team throughout, so we did not have to keep re-explaining things. 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 team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later.

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. We are already discussing the next phase with them.

Project summary

We hired Data Theorem, Inc. to build a supply chain traceability prototype on a permissioned blockchain. 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 4.0
  • Quality 4.0
  • Schedule 4.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Blockchain Development
Project Cost:
$10,000 to $49,999
Project Duration:
Apr 2026 - Jul 2026
Business Type:
Human Resources
Location:
Dublin, Ireland

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Director at Fairway Staffing Ltd. We operate in Human Resources and most of our customers are in and around Dublin, Ireland.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to build a supply chain traceability prototype on a permissioned blockchain before our busy season.
What services did the company provide for your project?
Blockchain 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. Data Theorem, Inc. 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?
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, 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.

Exceeded our expectations on quality and communication

Carlos Miller / Founder | Aug 20, 2026

Data Theorem, Inc. did an excellent job for us. We dealt with the same core team throughout, so we did not have to keep re-explaining things. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time.

Feedback from our customers has been very positive so far.

I would recommend Data Theorem, Inc. to anyone looking for a dependable Software Development partner.

Project summary

Data Theorem, Inc. was brought in to rebuild an internal order management system that had outgrown its original design. Scope included discovery workshops, development in two-week sprints and a short support period after launch. The engagement ran for about 5 months.

  • Overall Rating 4.5
  • Quality 4.0
  • Schedule 4.5
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$150,000 to $499,999
Project Duration:
Jan 2026 - Jun 2026
Business Type:
Government & Public Sector
Location:
Portland, USA

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 Portland, USA. 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 team was spending too much time on manual work. The goal was to rebuild an internal order management system that had outgrown its original design 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?
We compared three or four agencies. Data Theorem, Inc. 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 Government & Public Sector 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?
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?
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.

Great Experience With Data Theorem, Inc. on Our E-commerce Development Project

Stephanie Carter / Director of Technology | Jul 17, 2026

We were very happy with how this project went. 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. We are already discussing the next phase with them.

Project summary

Data Theorem, Inc. was brought in to migrate our online store from an older platform to a new one. The work covered requirements, design, development, testing and launch support. The engagement ran for about 4 months.

  • Overall Rating 5.0
  • Quality 4.5
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
E-commerce Development
Project Cost:
$150,000 to $499,999
Project Duration:
Feb 2026 - Jun 2026
Business Type:
Mining & Metals
Location:
Portland, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Copper Leaf Metals is a Mining & Metals business in Portland, USA. As Director of Technology, I was responsible for this project on our side and the main contact for Data Theorem, Inc..
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 migrate our online store from an older platform to a new one so they could focus on customers.
What services did the company provide for your project?
E-commerce 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?
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?
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?
Yes. They are a reliable E-commerce Development partner.

Would happily work with them again

Johan van der Merwe / Co-Founder | May 26, 2026

I would rate this engagement highly on almost every front. 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.

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

We would definitely work with them again.

Project summary

We hired Data Theorem, Inc. to migrate our online store from an older platform to a new one. 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 4.5
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
E-commerce Development
Project Cost:
$10,000 to $49,999
Project Duration:
Jul 2025 - Apr 2026
Business Type:
Real Estate
Location:
Johannesburg, South Africa

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Co-Founder at Kinetic Homes (Pty) Ltd. We operate in Real Estate and most of our customers are in and around Johannesburg, South Africa.
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 migrate our online store from an older platform to a new one.
What services did the company provide for your project?
E-commerce 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 Real Estate 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?
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. They are a reliable E-commerce Development partner.

Data Theorem, Inc. Delivered a Quality Software Development Solution on Time

Arjun Agarwal / Managing Director | May 21, 2026

Data Theorem, Inc. 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. The developers were knowledgeable and made a few suggestions that ended up saving us time and money. We dealt with the same core team throughout, so we did not have to keep re-explaining things.

Since launch, everything has been stable and our team has adapted to it quickly. Documentation at handover was a bit thin and we had to ask for more detail.

Happy to recommend them.

Project summary

We partnered with Data Theorem, Inc. 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. The engagement ran for about 4 months.

  • Overall Rating 4.0
  • Quality 4.0
  • 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 - Apr 2026
Business Type:
Human Resources
Location:
Chennai, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Brightpath Talent Pvt Ltd is a Human Resources business in Chennai, India. As Managing Director, I was responsible for this project on our side and the main contact for Data Theorem, Inc..
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?
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?
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?
We can now handle more volume without adding staff, which was the main goal.
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.

Professional team that made a complex project feel manageable

Charlotte Shaw / Marketing Director | May 11, 2026

The project went well overall. 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. 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. Estimates on a few features were optimistic and those took longer than planned. Overall, a team we trust and plan to keep working with.

Project summary

We hired Data Theorem, Inc. to rebuild a slow, outdated web app and move it to a new framework. They also took care of integrations with a couple of third-party tools we already used. The engagement ran for about 2 months.

  • Overall Rating 4.0
  • Quality 4.0
  • Schedule 3.5
  • Project Cost 4.0
  • Willing To Refer 5.0
Project Type:
Web Development
Project Cost:
$150,000 to $499,999
Project Duration:
Feb 2026 - Apr 2026
Business Type:
Telecommunications
Location:
London, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Marketing Director at Atlas Networks Ltd, a Telecommunications company based in London, 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?
Web 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?
They understood our goals quickly, partly because they had worked with Telecommunications clients before.
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. 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.

Solid AI & Machine Learning Work With Clear Communication Throughout

Sarah Wilson / IT Director | Feb 03, 2026

Data Theorem, Inc. did an excellent job for us. They shared working builds regularly, so we could test early and give feedback before things were locked in. We dealt with the same core team throughout, so we did not have to keep re-explaining things.

The AI & Machine Learning work has already made a noticeable difference — tasks that used to take hours now take minutes. We are already discussing the next phase with them.

Project summary

Our company worked with Data Theorem, Inc. to add an AI chatbot to our support site that answers questions from our help docs. They worked alongside our in-house team, which mostly handled business requirements and testing. Overall it was a 4-month engagement.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$500,000+
Project Duration:
Aug 2025 - Dec 2025
Business Type:
Healthcare
Location:
Montreal, Canada

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Westbridge Wellness is a Healthcare business in Montreal, Canada. As IT Director, I was responsible for this project on our side and the main contact for Data Theorem, Inc..
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?
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?
We compared three or four agencies. Data Theorem, Inc. 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 Healthcare 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?
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?
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?
Definitely. We have already started talking about the next phase.
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