We built 20+ React Native apps in 2025. Here is what each feature actually costs — no agency fluff. By David Friedman , Founder of AppBrewers React Native is the most popular cross-platform framework in 2026. One codebase. iOS and Android. But pricing is still opaque. Agencies quote 10,000 Euro for a simple app and 100,000 Euro for a complex one. Here are the real numbers based on 20+ apps we built last year. Cost by Feature Feature Low Estimate High Estimate Hours User authentication (email/social) 500 Euro 1,000 Euro 8-16 Push notifications 400 Euro 800 Euro 6-12 In-app purchases / subscriptions 1,000 Euro 2,500 Euro 16-40 Real-time chat 1,500 Euro 3,000 Euro 20-40 GPS / maps integration 800 Euro 1,500 Euro 10-20 Camera / photo upload 600 Euro 1,200 Euro 8-16 Offline mode 1,200 Euro 2,500 Euro 16-32 Admin dashboard (web) 2,000 Euro 4,000 Euro 24-48 AI integration 1,500 Euro 3,500 Euro 20-48 Cost by App Type App Type Complexity Timeline Price Range Simple utility app Auth, 3-5 screens 2-4 weeks 3,000-6,000…