App Cost Calculator

Get a first cost estimate for your app idea. Free and non-binding.

As an experienced Flutter and mobile app developer, I create custom apps for iOS and Android. Use my cost calculator for a realistic estimate of app development costs.

Configure Your App

Cost Estimate

Base €8.000
Additional Features €0
Design €0
Subtotal €8.000
Timeline Adjustment €0
Total €8.000

* Non-binding estimate

How Much Does App Development Cost?

Factors That Influence Price

  • Platform: Native iOS/Android or cross-platform with Flutter
  • Features: Number and complexity of functions
  • Backend: API development and database integration
  • Design: Standard UI or custom design
  • Integrations: Payment, Maps, Push-Notifications, etc.

Why Flutter for Your App?

With Flutter, I develop cross-platform apps that run on iOS and Android – with just one codebase. This saves development time and costs compared to two native apps.

  • Up to 40% cost savings compared to native development
  • Native performance on both platforms
  • Faster development thanks to Hot Reload

Average costs: A simple mobile app starts from approx. €8.000, while complex apps with backend, payment and custom design start at €25.000+ .

Important to Know

This estimate is a first orientation based on experience.

The final price depends on many factors and will be determined after a personal consultation.

All prices exclude VAT.

My App Development Process

1

Initial Meeting

We discuss your idea, goals and requirements. I will honestly advise you on feasibility and technologies.

2

Concept & Offer

I create a detailed concept with features, timeline and fixed price. Transparent and traceable.

3

Development

Agile development with regular updates. You can track progress and give feedback.

4

Launch & Support

I accompany the App Store launch and offer support. Long-term maintenance on request.

Frequently Asked Questions

A simple app can be ready in 6-8 weeks. Medium-complexity apps need about 2-3 months, while comprehensive apps with custom backend and many features take 4-6 months. The exact duration depends on scope, complexity and feedback cycles.

A simple Flutter app with basic features (few screens, simple logic, no complex integrations) starts at about €8,000. This includes development for iOS and Android with a shared codebase, basic UI design and initial testing. Additional features like login, payment or backend increase costs.

I recommend Flutter for most projects as it offers significant advantages:

  • Cost savings: One codebase instead of two separate apps saves 30-40% of development costs
  • Faster launch: Release both platforms simultaneously
  • Easier maintenance: Updates only need to be developed once
  • Native performance: Flutter compiles to native code

Native development only makes sense for very platform-specific features or if you already have native apps.

It depends on your app. A backend with API is necessary if you:

  • Need user accounts and authentication
  • Want to synchronize data between multiple users
  • Want to send push notifications
  • Want to process payments
  • Want to dynamically update content without app update

For pure information apps or tools without cloud synchronization, an app without backend is often sufficient. I develop backends with Laravel incl. admin panel for management.

Yes, absolutely! I develop apps with a scalable architecture that allows later extensions. Many of my clients start with an MVP (Minimum Viable Product) and add more features later. The clean code with BLoC Pattern and Dependency Injection makes extensions easy and maintainable.

The development price includes:

  • Complete app development for iOS and Android (with Flutter)
  • UI/UX design - either standard Material Design or custom as specified
  • Testing on various devices and operating system versions
  • App Store preparation - technical preparation for upload
  • Documentation for code and features
  • Bug fixes during development phase

Not included: App Store fees (€99/year iOS, €25 one-time Android), server hosting (if backend needed), graphics/illustrations from designers, marketing.

I work with a fair milestone-based payment model:

  • 30% down payment at project start
  • 40% after milestone (e.g. after beta version)
  • 30% at final acceptance and code handover

For smaller projects (under €10,000), a 50/50 split can also be agreed. Invoice with 19% VAT, payment by bank transfer.

Yes! After launch, I offer maintenance and support:

  • Bug fixes: I fix critical errors quickly
  • OS updates: Adaptations for new iOS/Android versions
  • Feature extensions: New functions as needed
  • Performance optimization: Improvements to app speed

Maintenance contracts are flexible - from hourly as needed to monthly flat rates for continuous support.

Ready for Your App Idea?

Let's talk about your project in a free initial consultation. I will honestly advise you on feasibility, costs and the best technical approach for your app.

Schedule Free Consultation Now View Portfolio