Quartett mobile

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Details

Founded:
2011
Hourly Rates:
Undisclosed
Employees:
50 - 249
Ratings:
4.3 8 Reviews

Industries Served

Aerospace & Defense Healthcare Telecommunications Food & Beverage Insurance Agriculture Retail & E-commerce

Where We Specialize

16% Progressive Web App
Progressive Web App 16%
IT Services 15%
Mobile App Development 14%
Software Development 12%
Web Development 10%
IoT Development 10%
Big Data Analytics 7%
Bot Development 5%
No Code/ Low Code 5%
Blockchain Development 3%
Xano 2%
Testing Services 1%

Industry Expertise

Retail60% Sports40%

Typical Project Size

53% Midmarket Business
38% Enterprise
9% Small Business

About

Quartett mobile is a software development company that turns ideas into working products. The company's main offerings are Mobile App Development. The company operates with a team of 50 - 249 professionals. Their home base is München, Germany. Overall, Quartett mobile is one of the options worth shortlisting for a technology project.

Quartett mobile Reviews

4.3 8 Reviews
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Delivered on time and stayed involved after launch

Andre Foster / Founder & CEO | Oct 16, 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. 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 would definitely work with them again.

Project summary

Our company worked with Quartett mobile to build a supply chain traceability prototype on a permissioned blockchain. The project was split into milestones, with a working build shared at the end of each one. Overall it was a 6-month engagement.

  • Overall Rating 4.5
  • Quality 5.0
  • Schedule 4.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Blockchain Development
Project Cost:
$50,000 to $149,999
Project Duration:
Mar 2026 - Sep 2026
Business Type:
Aerospace & Defense
Location:
New York, 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 New York, 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 had tried to do this internally and it stalled. We needed specialists to build a supply chain traceability prototype on a permissioned blockchain.
What services did the company provide for your project?
Mainly Blockchain 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?
We compared three or four agencies. Quartett mobile 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?
Yes, on time and within budget.
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?
Definitely. We have already started talking about the next phase.

Strong Technical Skills and a Very Responsive IoT Development Team

Jason Johnson / Head of Engineering | Oct 12, 2026

We were happy with the final result. Their project manager kept things organised and was quick to flag anything that might affect the timeline. We dealt with the same core team throughout, so we did not have to keep re-explaining things.

Feedback from our customers has been very positive so far. There were some early misunderstandings on requirements that took a few rounds to sort out.

We are already discussing the next phase with them.

Project summary

We partnered with Quartett mobile to build firmware and a companion app for a smart device we were launching. 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 4.0
  • Quality 4.0
  • Schedule 4.5
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
IoT Development
Project Cost:
$50,000 to $149,999
Project Duration:
Mar 2026 - Aug 2026
Business Type:
Healthcare
Location:
Nashville, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Cobalt Wellness is a Healthcare business in Nashville, USA. As Head of Engineering, I was responsible for this project on our side and the main contact for Quartett mobile.
What specific problem or business challenge led you to hire this company?
We needed to build firmware and a companion app for a smart device we were launching, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
Mainly IoT 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?
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?
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?
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, I would recommend them and we plan to work with them again.

They listened, asked the right questions, and delivered

Hui Min Ng / Founder | Aug 16, 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. 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.

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. I would recommend Quartett mobile to anyone looking for a dependable Low-Code / No-Code Development partner.

Project summary

We engaged Quartett mobile to build internal tools on a low-code platform so our team could stop relying on spreadsheets. Scope included discovery workshops, development in two-week sprints and a short support period after launch. Overall it was a 6-month engagement.

  • Overall Rating 4.0
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 4.0
  • Willing To Refer 5.0
Project Type:
Low-Code / No-Code Development
Project Cost:
$10,000 to $49,999
Project Duration:
Jan 2026 - Jul 2026
Business Type:
Telecommunications
Location:
Singapore

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Founder at Northgate Networks Pte Ltd. We operate in Telecommunications and most of our customers are in and around Singapore.
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 internal tools on a low-code platform so our team could stop relying on spreadsheets so they could focus on customers.
What services did the company provide for your project?
Low-Code / No-Code 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?
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?
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 would recommend them and we plan to work with them again.

Skilled Quality Assurance & Testing Team That Understood Our Business

Conor Byrne / Managing Director | Aug 06, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. 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. Their project manager kept things organised and was quick to flag anything that might affect the timeline.

We are already seeing better numbers than before the project. We are already discussing the next phase with them.

Project summary

Our company worked with Quartett mobile to take over manual and regression testing before each release. The work covered requirements, design, development, testing and launch support. Overall it was a 6-month engagement.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Quality Assurance & Testing
Project Cost:
Less than $10,000
Project Duration:
Dec 2025 - Jun 2026
Business Type:
Food & Beverage
Location:
Galway, Ireland

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Managing Director at Cobalt Foods Ltd. We operate in Food & Beverage and most of our customers are in and around Galway, Ireland.
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 take over manual and regression testing before each release so they could focus on customers.
What services did the company provide for your project?
Quality Assurance & Testing, including planning, development, testing and launch support.
Why did you choose this company over other providers you considered?
They had relevant experience in Food & Beverage 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?
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?
Definitely. We have already started talking about the next phase.

Good work overall, with a few bumps along the way

Johan Dlamini / Marketing Director | Jun 30, 2026

The final product works well for us, although the process could have been smoother. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building. 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. Their team changed one developer midway, which slowed things down for a couple of weeks.

I would recommend Quartett mobile to anyone looking for a dependable Software Development partner.

Project summary

Quartett mobile was brought in to build a custom operations platform to replace the spreadsheets and email threads we were running the business on. They worked alongside our in-house team, which mostly handled business requirements and testing. We worked together for around 7 months.

  • Overall Rating 3.5
  • Quality 3.5
  • Schedule 3.5
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$50,000 to $149,999
Project Duration:
Nov 2025 - Jun 2026
Business Type:
Insurance
Location:
Cape Town, South Africa

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Insurance company based in Cape Town, South Africa. 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 build a custom operations platform to replace the spreadsheets and email threads we were running the business on before our busy season.
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?
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 Insurance 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?
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?
Yes. They are a reliable Software Development partner.

Strong Technical Skills and a Very Responsive Software Development Team

Oliver Barker / IT Director | Apr 09, 2026

I would rate this engagement highly on almost every front. They shared working builds regularly, so we could test early and give feedback before things were locked in. 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. If you need a team that communicates well and delivers, they are a good choice.

Project summary

We hired Quartett mobile to develop a scheduling and dispatch tool for our field team. Their team handled planning, development and QA, with our product owner signing off each milestone. The engagement ran for about 4 months.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$50,000 to $149,999
Project Duration:
Oct 2025 - Feb 2026
Business Type:
Agriculture
Location:
Reading, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Atlas Growers is a Agriculture business in Reading, UK. As IT Director, I was responsible for this project on our side and the main contact for Quartett mobile.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to develop a scheduling and dispatch tool for our field team 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?
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?
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.

Would happily work with them again

Callum Edwards / Co-Founder & CTO | Mar 03, 2026

Overall we had a good experience working with Quartett mobile. 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.

Feedback from our customers has been very positive so far. 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 engaged Quartett mobile to automate approval workflows using a no-code platform. The work covered requirements, design, development, testing and launch support. The project took roughly 9 months from kickoff to launch.

  • Overall Rating 4.0
  • Quality 4.0
  • Schedule 4.5
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
Low-Code / No-Code Development
Project Cost:
Less than $10,000
Project Duration:
May 2025 - Feb 2026
Business Type:
Retail & E-commerce
Location:
Manchester, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Co-Founder & CTO at Crestview Brands Ltd, a Retail & E-commerce company based in Manchester, 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 team was spending too much time on manual work. The goal was to automate approval workflows using a no-code platform so they could focus on customers.
What services did the company provide for your project?
End-to-end Low-Code / No-Code 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 Retail & E-commerce and their proposal was the clearest of the ones we received.
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?
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.

Reliable IoT Development Partner That Delivered What They Promised

Owen Chen / Project Manager | Feb 19, 2026

Overall we had a good experience working with Quartett mobile. They shared working builds regularly, so we could test early and give feedback before things were locked in. Even with the time zone difference, responses usually came the same day and we never felt left in the dark.

The IoT Development work has already made a noticeable difference — tasks that used to take hours now take minutes. A couple of milestones slipped by a week or so, mostly around testing.

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

Project summary

Quartett mobile was brought in to build firmware and a companion app for a smart device we were launching. The project was split into milestones, with a working build shared at the end of each one. The engagement ran for about 9 months.

  • Overall Rating 4.0
  • Quality 4.0
  • Schedule 4.5
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
IoT Development
Project Cost:
$50,000 to $149,999
Project Duration:
May 2025 - Jan 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 Project Manager 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 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?
Mainly IoT 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?
We compared three or four agencies. Quartett mobile 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?
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?
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?
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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