Before you start: the questions that define your app
Before talking about technology or budget, these questions must be answered:
What specific problem does your app solve? Failed apps tend to be solutions looking for a problem. Define the specific pain point you are solving for a specific user.
Who is your user and what device do they use? If your audience is predominantly iOS (typical in premium markets), that should be prioritised. If it is Android (more widespread in many markets), likewise. Knowing this can save 30–40% of the initial budget.
Do you need a native app or could it be a PWA? A Progressive Web App works like an app on mobile but is developed as a website. For many use cases (catalogues, bookings, client portals), a PWA is faster and cheaper than a native app.
What is your monetisation model? Freemium, subscription, one-off payment, transaction commission. This directly affects the technical architecture from day 1.
What specific problem does your app solve? Failed apps tend to be solutions looking for a problem. Define the specific pain point you are solving for a specific user.
Who is your user and what device do they use? If your audience is predominantly iOS (typical in premium markets), that should be prioritised. If it is Android (more widespread in many markets), likewise. Knowing this can save 30–40% of the initial budget.
Do you need a native app or could it be a PWA? A Progressive Web App works like an app on mobile but is developed as a website. For many use cases (catalogues, bookings, client portals), a PWA is faster and cheaper than a native app.
What is your monetisation model? Freemium, subscription, one-off payment, transaction commission. This directly affects the technical architecture from day 1.
React Native vs Flutter vs Native App: the definitive comparison in 2026
React Native (Meta)
- Develop once, runs on both iOS and Android
- JavaScript/TypeScript codebase (many developers available)
- Very good performance but not identical to native for complex animations
- Ideal for: enterprise apps, marketplaces, management applications
- Development cost: ⭐⭐⭐ (medium)
- Recommended for 70% of business projects
Flutter (Google) - Also cross-platform, with its own rendering engine - Ultra-smooth UI, hard to distinguish from native apps - Steeper learning curve (Dart as the language) - Ideal for: apps with complex animations, fintech, premium experiences - Development cost: ⭐⭐⭐ (medium) - Our choice when UX is a differentiator
Native App (Swift for iOS / Kotlin for Android) - Maximum performance and access to all OS APIs - Requires two separate codebases (cost ×2) - Ideal for: apps that use hardware intensively (AR, advanced camera, GPS) - Development cost: ⭐⭐⭐⭐⭐ (high) - Only recommended if you have a very specific use case
Our general recommendation in 2026: React Native for speed and optimal cost, Flutter if visual quality is critical to your business.
Flutter (Google) - Also cross-platform, with its own rendering engine - Ultra-smooth UI, hard to distinguish from native apps - Steeper learning curve (Dart as the language) - Ideal for: apps with complex animations, fintech, premium experiences - Development cost: ⭐⭐⭐ (medium) - Our choice when UX is a differentiator
Native App (Swift for iOS / Kotlin for Android) - Maximum performance and access to all OS APIs - Requires two separate codebases (cost ×2) - Ideal for: apps that use hardware intensively (AR, advanced camera, GPS) - Development cost: ⭐⭐⭐⭐⭐ (high) - Only recommended if you have a very specific use case
Our general recommendation in 2026: React Native for speed and optimal cost, Flutter if visual quality is critical to your business.
Real costs of developing an app in 2026
These are real ranges — not figures designed to impress or scare you:
MVP (Minimum Viable Product) — 6–10 weeks - Basic app with 3–5 main screens - User authentication, database, admin panel - Cost: €8,000–20,000 - Ideal for validating an idea before investing further
Full enterprise app — 3–5 months - 10–20 screens, multiple user roles - Integrations with external APIs (payment, maps, notifications) - Robust, scalable backend - Cost: €25,000–60,000
App with advanced features — 5–9 months - Integrated AI, video calls, marketplace, AR - High scalability, exhaustive testing - Cost: €60,000–150,000+
Important: Publication costs for the App Store and Google Play (€99/year and €25 one-off respectively) are minimal. But post-launch maintenance typically represents 15–20% of the annual development cost.
MVP (Minimum Viable Product) — 6–10 weeks - Basic app with 3–5 main screens - User authentication, database, admin panel - Cost: €8,000–20,000 - Ideal for validating an idea before investing further
Full enterprise app — 3–5 months - 10–20 screens, multiple user roles - Integrations with external APIs (payment, maps, notifications) - Robust, scalable backend - Cost: €25,000–60,000
App with advanced features — 5–9 months - Integrated AI, video calls, marketplace, AR - High scalability, exhaustive testing - Cost: €60,000–150,000+
Important: Publication costs for the App Store and Google Play (€99/year and €25 one-off respectively) are minimal. But post-launch maintenance typically represents 15–20% of the annual development cost.
The 5 most costly mistakes in app development
1. Not conducting user research before designing
42% of failed apps fail because nobody asked the right questions to real users before building. €1,000 in user research prevents €20,000 in redesigns.
2. Underestimating the backend
The app the user sees is only 30% of the work. The backend (server, database, APIs, security) is the remaining 70%. A poorly designed backend at the outset can cost 10× more to redo later.
3. Not planning for scalability
An app designed for 100 users can break at 10,000. Designing for scale from the start costs little more, but rewriting everything does.
4. Launching without integrated analytics
If you do not measure everything from day 1 (which screens are visited most, where users drop off, what errors they encounter), you cannot improve what you cannot see.
5. Choosing the cheapest provider
A poorly built app can cost double or triple in fixes what was saved by going cheap. The real cost is not the development price but the cost of an app that does not work.
42% of failed apps fail because nobody asked the right questions to real users before building. €1,000 in user research prevents €20,000 in redesigns.
2. Underestimating the backend
The app the user sees is only 30% of the work. The backend (server, database, APIs, security) is the remaining 70%. A poorly designed backend at the outset can cost 10× more to redo later.
3. Not planning for scalability
An app designed for 100 users can break at 10,000. Designing for scale from the start costs little more, but rewriting everything does.
4. Launching without integrated analytics
If you do not measure everything from day 1 (which screens are visited most, where users drop off, what errors they encounter), you cannot improve what you cannot see.
5. Choosing the cheapest provider
A poorly built app can cost double or triple in fixes what was saved by going cheap. The real cost is not the development price but the cost of an app that does not work.
Frequently Asked Questions
How long does it take to develop an app?
A well-defined MVP can be ready in 6–10 weeks. A complete app takes between 3 and 6 months. Timelines depend mainly on the clarity of requirements and the speed of client decision-making.
Do I need to publish on the App Store and Google Play?
For consumer apps (B2C), yes. For enterprise apps (B2B or internal), you can distribute them privately without going through the stores, which simplifies the process. PWAs are also an option — they require no installation.
What is an MVP and why is it important?
An MVP (Minimum Viable Product) is a simplified version of your app with only the essential functions. It allows you to validate the concept with real users before investing in all the features, enormously reducing risk.
Can I start with a small investment and scale later?
Absolutely. It is the strategy we recommend: start with an MVP of €8,000–15,000, validate with real users, gather feedback and then invest in the features your users actually demand.
