Having a mobile app built is a big step for many entrepreneurs. The questions are always the same: what does it cost, how long does it take, should I choose iOS or Android, and how do I know if my idea works?
In this article I give an honest overview — no sales pitch, but the reality of app development in 2026.
iOS, Android or both?
This is the first question you need to answer. The options:
Native (iOS + Android separately)
Two separate codebases, maximum performance and platform-specific capabilities. More expensive and slower to build, but the best user experience.
Cross-platform (React Native / Expo)
One codebase, runs on both iOS and Android. Costs 30–50% lower than native, quality excellent for most use cases. This is my default approach for new apps.
Progressive Web App (PWA)
No app store needed — the website behaves like an app. Limited hardware access, but a smart choice for certain use cases.
For most B2B and business apps, React Native via Expo is the wisest choice: one codebase, lower costs, sufficient performance.
What does a mobile app cost?
Honestly: good apps aren't cheap. Here are realistic numbers:
- Simple app (MVP, 6–10 screens): €15,000 – €35,000
- Mid-sized app with backend and authentication: €35,000 – €80,000
- Complex app with matching, payments or real-time features: €80,000+
Offers under €10,000 for a "complete app" are almost always a template with your logo on it, or low-quality work that costs you dearly later.
How long does it take?
A realistic timeline:
- Discovery and design (2–4 weeks): User flows, wireframes, technical architecture
- MVP build (6–16 weeks): Core functionality live
- Testing and app store review (1–3 weeks): Apple can take up to 2 weeks
- Total: 3–6 months for a solid MVP
What makes a good app?
Most apps don't fail because of bad code, but because of bad product decisions. What I always recommend:
- Start with an MVP — Build the smallest version that solves the core problem. Validate with real users before building further.
- Focus on one thing — The best apps do one thing exceptionally well.
- Performance isn't a luxury — An app that responds slower than 300ms loses users. Performance must be baked in, not added later.
- App Store Optimization (ASO) — Visibility in the App Store is the biggest growth lever for many apps.
My approach
For mobile apps I work with React Native and Expo. This gives:
- One codebase for iOS and Android
- Native performance for most use cases
- Over-the-air updates (no new App Store review for small updates)
- Access to native hardware (camera, GPS, biometrics, push notifications)
An example from my portfolio: StudyBuddy — a matching app for students to find local study partners based on course, location and availability, with a swipe interface and direct chat upon matching.
Ready to discuss your app idea?
Send me a short description of what you want to build, and I'll give you an honest picture of feasibility, costs and timeline — free and no strings attached. See our mobile app development service for more.