App-concept.com GmbH

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Details

Founded:
2019
Hourly Rates:
< $25 / hr
Employees:
10 - 49
Ratings:
4.2 10 Reviews

Industries Served

Legal Services Construction Government & Public Sector Education Aerospace & Defense Fashion & Apparel Nonprofit & NGO Environmental Services Pharmaceuticals & Biotechnology Energy & Utilities

Where We Specialize

26% Ecommerce
Ecommerce 26%
Bot Development 19%
Software Development 17%
IoT Development 16%
AI Development 15%
Mobile App Development 4%
Web Development 3%

Industry Expertise

Education100%

Typical Project Size

40% Small Business
36% Midmarket Business
24% Enterprise

About

App-concept.com GmbH has been in business since 2019, delivering technology projects for clients. Their core services include Mobile App Development. App-concept.com GmbH employs 10 - 49 people. Typical hourly rates run around < $25 / hr/hr. App-concept.com GmbH holds a 5.0-star rating across 3 client reviews. The team is based in Chemnitz, Germany. This profile is a starting point — reach out to App-concept.com GmbH directly to discuss project specifics.

App-concept.com GmbH Reviews

4.2 10 Reviews
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Exceeded our expectations on quality and communication

Anna Weber / Co-Founder | Oct 15, 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.

The AI & Machine Learning 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 App-concept.com GmbH to build a demand forecasting model on top of our sales data. The project was split into milestones, with a working build shared at the end of each one. Overall it was a 8-month engagement.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
Less than $10,000
Project Duration:
Dec 2025 - Aug 2026
Business Type:
Legal Services
Location:
Berlin, Germany

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Co-Founder at Silverline Legal GmbH, a Legal Services company based in Berlin, Germany. 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 build a demand forecasting model on top of our sales data so they could focus on customers.
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 Legal Services 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?
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?
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, I've already recommended them to a couple of people I know.

Great Experience With App-concept.com GmbH on Our Web Development Project

Lauren Graham / Senior Product Manager | Sep 02, 2026

App-concept.com GmbH 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. They were upfront about what was realistic within our budget, which helped us prioritise the right features.

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

Project summary

We hired App-concept.com GmbH to rebuild a slow, outdated web app and move it to a new framework. The project was split into milestones, with a working build shared at the end of each one. We worked together for around 4 months.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Web Development
Project Cost:
$500,000+
Project Duration:
Mar 2026 - Jul 2026
Business Type:
Construction
Location:
New York, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Construction company based in New York, USA. I'm the Senior Product 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 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?
Mainly Web Development. They also helped with the technical planning and a few integrations with our existing tools.
Why did you choose this company over other providers you considered?
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?
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?
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.

Would happily work with them again

Callum Turner / Engineering Manager | Aug 09, 2026

Our experience with App-concept.com GmbH was really positive from start to finish. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. Their project manager kept things organised and was quick to flag anything that might affect the timeline.

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

App-concept.com GmbH was brought in 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 project took roughly 3 months from kickoff to launch.

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

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Silverline Council Services Ltd is a Government & Public Sector business in Cambridge, UK. As Engineering Manager, I was responsible for this project on our side and the main contact for App-concept.com GmbH.
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 firmware and a companion app for a smart device we were launching so they could focus on customers.
What services did the company provide for your project?
IoT Development, including planning, development, testing and launch support.
Why did you choose this company over other providers you considered?
They had relevant experience in Government & Public Sector and their proposal was the clearest of the ones we received.
How clearly did the company understand your requirements and business goals?
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?
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?
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.

Good work overall, with a few bumps along the way

Raj MacDonald / Director | Jul 24, 2026

We got a good result in the end, but the road there had a few bumps. 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. Documentation at handover was a bit thin and we had to ask for more detail. We are already discussing the next phase with them.

Project summary

We hired App-concept.com GmbH to develop a scheduling and dispatch tool for our field team. Scope included discovery workshops, development in two-week sprints and a short support period after launch. Overall it was a 7-month engagement.

  • 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:
Education
Location:
Vancouver, Canada

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Director at Lumen EdTech. We operate in Education and most of our customers are in and around Vancouver, Canada.
What specific problem or business challenge led you to hire this company?
We needed to develop a scheduling and dispatch tool for our field team, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
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?
They understood our goals quickly, partly because they had worked with Education 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?
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 would recommend them and we plan to work with them again.

Solid delivery, though timelines needed some pushing

Thijs Bakker / Director | May 23, 2026

We got a good result in the end, but the road there had a few bumps. 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. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time.

We are already seeing better numbers than before the project. A couple of milestones slipped by a week or so, mostly around testing. Happy to recommend them.

Project summary

We engaged App-concept.com GmbH to rebuild our existing mobile app, which had poor reviews and frequent crashes. The work covered requirements, design, development, testing and launch support. The project took roughly 6 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:
Nov 2025 - May 2026
Business Type:
Aerospace & Defense
Location:
Eindhoven, Netherlands

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Nimbus Aerospace BV is a Aerospace & Defense business in Eindhoven, Netherlands. As Director, I was responsible for this project on our side and the main contact for App-concept.com GmbH.
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?
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 Aerospace & Defense 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?
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?
Definitely. We have already started talking about the next phase.

Good results, communication improved as the project went on

Kavya Nair / CEO | May 06, 2026

The final product works well for us, although the process could have been smoother. 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. Documentation at handover was a bit thin and we had to ask for more detail. Overall, a team we trust and plan to keep working with.

Project summary

Our company worked with App-concept.com GmbH to build a demand forecasting model on top of our sales data. The work covered requirements, design, development, testing and launch support. The project took roughly 9 months from kickoff to launch.

  • Overall Rating 3.5
  • Quality 4.0
  • Schedule 3.5
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$10,000 to $49,999
Project Duration:
Jul 2025 - Apr 2026
Business Type:
Fashion & Apparel
Location:
Mumbai, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the CEO at Keystone Apparel, a Fashion & Apparel company based in Mumbai, 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?
Our team was spending too much time on manual work. The goal was to build a demand forecasting model on top of our sales data so they could focus on customers.
What services did the company provide for your project?
End-to-end AI & Machine Learning — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.
How clearly did the company understand your requirements and business goals?
Well. There were a couple of points we had to clarify early on, but after that they were spot on.
How was your overall experience with their communication and project management?
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?
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.

App-concept.com GmbH Delivered a Quality IoT Development Solution on Time

Priya Foster / VP of Engineering | Mar 04, 2026

App-concept.com GmbH did an excellent job for us. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. 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. We are already discussing the next phase with them.

Project summary

We partnered with App-concept.com GmbH to set up a sensor network and alerts for our cold storage facilities. Their team handled planning, development and QA, with our product owner signing off each milestone. Overall it was a 3-month engagement.

  • Overall Rating 4.5
  • Quality 4.0
  • Schedule 4.5
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
IoT Development
Project Cost:
$500,000+
Project Duration:
Oct 2025 - Jan 2026
Business Type:
Nonprofit & NGO
Location:
Chicago, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the VP of Engineering at Stonebridge Community Network Inc, a Nonprofit & NGO company based in Chicago, USA. I look after our technology and work closely with outside partners on bigger projects.
What specific problem or business challenge led you to hire this company?
Our team was spending too much time on manual work. The goal was to set up a sensor network and alerts for our cold storage facilities so they could focus on customers.
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?
They had relevant experience in Nonprofit & NGO 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?
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?
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 IoT Development partner.

Solid IoT Development Work With Clear Communication Throughout

James Barker / Founder | Jan 29, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. Their project manager kept things organised and was quick to flag anything that might affect the timeline. They were upfront about what was realistic within our budget, which helped us prioritise the right features.

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

Project summary

We hired App-concept.com GmbH to set up a sensor network and alerts for our cold storage facilities. They worked alongside our in-house team, which mostly handled business requirements and testing. Overall it was a 3-month engagement.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 5.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
IoT Development
Project Cost:
$10,000 to $49,999
Project Duration:
Oct 2025 - Jan 2026
Business Type:
Environmental Services
Location:
Cambridge, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Founder at Greenfield Green Solutions Ltd, a Environmental Services company based in Cambridge, UK. I look after our technology and work closely with outside partners on bigger projects.
What specific problem or business challenge led you to hire this company?
We needed to set up a sensor network and alerts for our cold storage facilities, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
IoT Development, plus QA and some consulting on how to structure the project.
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?
Communication was good overall and improved further once we settled into a routine.
Did the company deliver the project on time and within your expected budget?
Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.
What tangible results or business impact have you seen since the project was completed?
We can now handle more volume without adding staff, which was the main goal.
What did you like most about working with this company?
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.

A reliable long-term partner for our tech needs

Lena Richter / Head of Digital Transformation | Jan 16, 2026

The project went well overall. We dealt with the same core team throughout, so we did not have to keep re-explaining things. 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.

The Web 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.

We would definitely work with them again.

Project summary

We hired App-concept.com GmbH to build a customer portal where clients can log in, track orders and download invoices. They worked alongside our in-house team, which mostly handled business requirements and testing. Overall it was a 8-month engagement.

  • Overall Rating 4.0
  • Quality 4.0
  • Schedule 4.0
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
Web Development
Project Cost:
$500,000+
Project Duration:
Apr 2025 - Dec 2025
Business Type:
Pharmaceuticals & Biotechnology
Location:
Stuttgart, Germany

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Head of Digital Transformation at Keystone Life Sciences GmbH. We operate in Pharmaceuticals & Biotechnology and most of our customers are in and around Stuttgart, Germany.
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 customer portal where clients can log in, track orders and download invoices.
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?
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 Pharmaceuticals & Biotechnology clients before.
How was your overall experience with their communication and project management?
Organised and transparent. Their project manager kept the project on track and flagged risks early.
Did the company deliver the project on time and within your expected budget?
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?
Their attention to detail and the quality of the final product.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.

Professional team that made a complex project feel manageable

Amit Bose / CTO | Jan 10, 2026

App-concept.com GmbH did an excellent job for us. 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. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time.

We launched on schedule and have not had any major issues since. We are already discussing the next phase with them.

Project summary

App-concept.com GmbH was brought in to build iOS and Android apps for our customers, including booking, payments and push notifications. They also took care of integrations with a couple of third-party tools we already used. The project took roughly 4 months from kickoff to launch.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$50,000 to $149,999
Project Duration:
Aug 2025 - Dec 2025
Business Type:
Energy & Utilities
Location:
Bengaluru, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the CTO at Trueline Solar, a Energy & Utilities company based in Bengaluru, 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?
Our team was spending too much time on manual work. The goal was to build iOS and Android apps for our customers, including booking, payments and push notifications 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?
A colleague recommended them, and our first calls confirmed they understood what we needed.
How clearly did the company understand your requirements and business goals?
Very well. They asked a lot of questions upfront and turned our rough ideas into a clear plan.
How was your overall experience with their communication and project management?
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?
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.
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