App development company in Berlin
iOS, Android and web apps for Berlin start-ups, scale-ups and established companies, planned and built by one dedicated team and served from our Frankfurt office.
- Custom quote after a brief
- No sales pitch
Company-wide:★★★★★ 4.9+ on Clutch·250+ brands·10 offices
UnFoldMart is an app development company serving Berlin from our Frankfurt office at Taunustor 1, 60310 Frankfurt am Main, about 420 km away; we have no office in Berlin. We design and build iOS, Android, cross-platform (Flutter, React Native) and web apps for companies in Berlin, with the GDPR, TDDDG consent and BFSG accessibility planned in, from discovery to store release and support. Meet us in person at our Frankfurt office or at any of our 10 offices, or by video. Meetings are in English, and pricing is a custom quote after a short brief and a free 30-minute call.
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Key facts
| Service | Mobile and web app development: iOS, Android, cross-platform (Flutter, React Native), web apps and PWAs, backend and store release |
|---|---|
| Company | UnFoldMart |
| Serving office | Frankfurt office: Taunustor 1, 60310 Frankfurt am Main, Germany (about 420 km from Berlin; no office in Berlin) |
| Meetings | Meet us in person at our Frankfurt office or at any of our 10 offices, or by video. |
| Languages | First call in English; project calls by video in English |
| Time zone | Central European Time (CET/CEST); project teams are led from our international offices |
| Typical timeline | Discovery 1–3 weeks · design 2–5 weeks · first version 8–16 weeks · testing and store release 1–3 weeks (ranges, not guarantees) |
| Pricing | Custom quote after a short brief: fixed-scope project or ongoing product team. No price list. |
| Booking | Free 30-minute video call ↗ |
| Company-wide | 10 offices in 10 markets · 250+ brands · 500+ projects · 4.9+ on Clutch · 8 working languages |
App development for Berlin companies
Berlin is Germany's capital and largest city. Its economy is built on high tech and services, including creative industries, start-ups, research and media, with universities such as Humboldt University, TU Berlin and the Free University.
Berlin at a glance
- IndustriesHigh tech, start-ups, creative industries, media, research
- UniversitiesHumboldt University, TU Berlin, Free University, Berlin University of the Arts
- Data lawGDPR, TDDDG (device access), BFSG (accessibility)
- Serving officeFrankfurt, about 420 km away
- Time zoneCET in winter, CEST in summer
Start-ups and scale-ups
First versions that can be tested with users, then grown sprint by sprint.
Media and creative companies
Content, community and subscription apps with a strong design.
Research and technology
Apps and tools that turn research or data products into something people use.
What our app developers for Berlin build
iOS and Android app development, Flutter and React Native apps, web apps and the backend behind them.
iOS and Android apps
Swift and Kotlin, full device access.
Cross-platform apps
One React Native or Flutter codebase.
Web apps and PWAs
Portals and tools, no store needed.
Backend, APIs and integrations
Accounts, payments, CRM, ERP.
MVPs and first versions
Test your idea with real users.
Takeover and support
Review, fixes, upgrades, rebuilds.
Native, cross-platform or web app?
Native iOS app development in Swift, Android in Kotlin, or one Flutter or React Native codebase. We recommend one in discovery.
| Native | Cross-platform | Web app / PWA | |
|---|---|---|---|
| Code | Swift (iOS) and Kotlin (Android) | One codebase: Flutter or React Native | One codebase: TypeScript, React |
| Performance and device features | Best; full device access | Very good for most apps | Good; limited device access |
| Time to both stores | Longest: two apps | Usually faster | No store needed |
| Best for | Demanding, device-heavy apps | Most business and consumer apps | Portals and internal tools |
Apps we can build
Common app types; illustrative screens, not client work.
Booking and scheduling
Pick a slot, pay, get reminders.
Shop and loyalty app
Browse, buy, collect points.
Customer portal
Orders and documents, one login.
Field-service tool
Jobs and checklists on site.
Marketplace
Two sides meet and book.
Finance dashboard
Balances and reports at a glance.
- Chat assistant
- Smart search
- Document reading
- Recommendations
How we work
From brief to store release, with a working build at every stage.
- 1BriefScope and quote
- 2PrototypeClickable design
- 3SprintsDemo every two weeks
- 4Store releaseApp Store · Google Play
Timeline
| Phase | Typical duration | You get |
|---|---|---|
| Discovery and scope | 1 to 3 weeks | Written scope and quote |
| UX and UI design | 2 to 5 weeks | Clickable prototype |
| Build in sprints | 8 to 16 weeks for a first version | Test build every sprint |
| Testing and store release | 1 to 3 weeks | Real-device and security testing, store submission |
| Support and next versions | Ongoing, as agreed | Monitoring, updates, next versions |
Typical ranges in weeks, not a guarantee.
How to choose an app development company in Berlin
Six checks before you sign, whoever you hire.
Platform fit
Ask which approach they recommend (native, Flutter, React Native or web) and why.
UnFoldMart: We recommend one in discovery.
A written scope and quote
What is in, what is out, and how changes are priced.
UnFoldMart: Scope, timeline and price in writing.
A visible process
A clickable prototype first, then demos and test builds you can install.
UnFoldMart: A demo after every two-week sprint.
Security and data protection
How data is protected and tested before release.
UnFoldMart: OWASP MASVS, security testing before launch.
Store release and ownership
Who submits to the App Store and Google Play, and who holds the accounts and code.
UnFoldMart: App Store and Google Play submission is part of our release step.
Support after launch
Updates for new iOS and Android versions, monitoring and a clean handover option.
UnFoldMart: Support agreed in your quote.
Agency, freelancer or in-house team?
| App agency | Freelancer | In-house team | |
|---|---|---|---|
| Skills | Design, build, testing and release in one team | Usually one specialism | The roles you hire |
| Start | After scope and quote | Often quick | After hiring |
| Continuity | Team covers absences and handover | Depends on one person | High while the team stays |
| Your management effort | Low to medium | Medium to high | High |
| Cost model | Project quote or monthly team | Hourly or daily rate | Salaries, hiring and tools |
| Best for | A full app, start to finish | A defined, smaller task | A long-term core product |
What affects the cost
No price list. Your quote depends on these factors.
- PlatformsiOS, Android, web.
- Screens and featuresHow many, how complex.
- IntegrationsPayments, CRM, ERP.
- Design depthStandard or custom.
- TimelineYour launch date.
- AccessibilityDesigning and testing for accessibility, as the BFSG requires for many consumer services, adds design and test time.
Ways to work with us
Fixed-scope project
Scope and price in writing.
Ongoing product team
A dedicated team, monthly.
Discovery first
A scope you can use anywhere.
How quoting works
- Short briefWhat and for whom.
- Free 30-minute callBy video, in English.
- Written estimateScope, timeline, price.
- You decideNo obligation.
GDPR, TDDDG and BFSG
This is general information, not legal advice. Your legal adviser has the final word.
GDPR and the Berlin supervisory authority
The GDPR applies to every app that processes personal data of people in the EU. Data protection supervision for companies in Berlin sits with the Berlin Commissioner for Data Protection and Freedom of Information. We plan consent, data minimisation and deletion into the app from the first sprint.
Official source: Supervisory authority (datenschutz-berlin.de) ↗TDDDG § 25: consent for device access
Under the German TDDDG, storing or reading information on a user's device, for example for tracking or analytics, needs the user's consent unless it is strictly necessary for the service the user asked for. We build consent into the app itself, not only into your website.
Official source: TDDDG § 25 (gesetze-im-internet.de) ↗BFSG: accessibility for consumer services
Since 28 June 2025 the German Accessibility Strengthening Act (BFSG) covers many services for consumers, including e-commerce and consumer banking services. We design and test apps for accessibility from the start.
Official source: BFSG § 1 (gesetze-im-internet.de) ↗Public standards we align our work to
Working with us from Berlin
One dedicated team; projects are led by UnFoldMart from our international offices.
Served from our Frankfurt office
Taunustor 1, 60310 Frankfurt am Main, about 420 km from Berlin. We have no office in Berlin.
In person or by video
Meet us in person at our Frankfurt office or at any of our 10 offices, or by video.
Language
Calls and project work in English.
Time zone: Central European Time (CET/CEST)
Office-hours overlap: –
09:00–18:00 local time in both offices. Same time zone as our Frankfurt office.
Company-wide figures across all our services, not app projects.
- Frankfurt · in person
- Zürich · in person
- London · in person
- Amsterdam · in person
- Paris · in person
- Madrid · in person
- Warsaw · in person
- Singapore · in person
- Vancouver · in person
- Gurugram · in person
Frequently asked questions
App development in Berlin: before you book a call.
Do you have an office in Berlin?
No. We serve Berlin from our Frankfurt office at Taunustor 1, 60310 Frankfurt am Main, about 420 km away. Meet us in person at our Frankfurt office or at any of our 10 offices, or by video. Workshops, design reviews and weekly check-ins run in English.
How much does app development cost in Berlin?
Pricing is custom. Cost depends on platforms, screens and features, integrations, design depth, compliance needs and your timeline. After a short brief and a free 30-minute call, you get a written estimate.
How long does it take to build an app?
Typically: discovery 1 to 3 weeks, design 2 to 5 weeks, build 8 to 16 weeks for a first version, testing and store release 1 to 3 weeks. These are ranges, not guarantees.
Should we build a native app or use Flutter or React Native?
Native (Swift for iOS, Kotlin for Android) suits top performance and deep device features. Cross-platform (Flutter or React Native) shares one codebase and usually reaches both stores faster. We recommend one in discovery.
Do you build apps for start-ups in Berlin?
Yes. We often start with a short discovery and a clickable prototype, then build a first version you can test with real users. The scope stays small enough to learn fast and grows sprint by sprint.
How do you handle the GDPR and German rules for apps in Berlin?
We plan consent, clear notices, data minimisation and deletion into the app from the first sprint, and build TDDDG-compliant consent for anything that reads or stores data on the device. For companies in Berlin, the supervisory authority is the Berlin Commissioner for Data Protection and Freedom of Information. Your legal adviser has the final word.
Does our app have to be accessible under the BFSG?
Many consumer services, such as e-commerce and consumer banking, fall under the BFSG since 28 June 2025, and their apps are part of the service. We design and test for accessibility from the start, so the requirement does not become a late rebuild. Your legal adviser confirms whether your service is covered.
Can you work with our in-house developers?
Yes. We can build the whole app or work alongside your developers in Berlin, for example on the mobile apps while your team owns the backend. Code standards, reviews and handover are agreed in the quote.
Who works on our project, and how do we communicate?
Projects are led by UnFoldMart from our international offices, with a small dedicated team; projects for Berlin are led from our Frankfurt office. Calls are by video, in English, with a demo after each sprint.
Can you take over an existing app?
Yes. We start with a review of the code, the store listings and the backend, then fix, upgrade or rebuild in steps, so your app stays available.
Building an app in Berlin?
Tell us what you want to build; the quote follows in writing.