App budgets go wrong in two ways: the first version tries to do too much, or the plan only covers the build and forgets that an app needs care after launch. Both are avoidable if you know where the money goes.
This guide explains the main cost drivers so you can shape a budget and a first release that fit. We don't quote average prices, because they depend entirely on your feature list. For numbers that match your plans, ask us to scope your app.
Key takeaways
- ✓Features drive cost more than anything else, so a focused first version is the biggest saving.
- ✓One cross-platform codebase usually costs less than two native apps for the same features.
- ✓Budget for store fees, monitoring and regular updates, not just the first build.
Features are the biggest cost driver
Every screen, rule and integration takes design, development and testing time. Some features take far more effort than they appear to, because they involve a server, security or edge cases:
- ✓User accounts, sign-in and password recovery
- ✓Payments, subscriptions and in-app purchases
- ✓Real-time features such as chat, live tracking or notifications
- ✓Offline use and syncing data when the connection returns
- ✓Admin tools for your team to manage content and users
- ✓Integrations with your CRM, booking or inventory systems
Native or cross-platform changes the budget
Building separate native apps in Swift for iOS and Kotlin for Android means two codebases to build and maintain. A cross-platform framework such as React Native or Flutter lets one codebase serve both stores, which usually lowers the cost of building and updating the app.
Native still makes sense for apps that depend heavily on device hardware, advanced graphics or the newest platform features. Our guide to native vs cross-platform apps covers the trade-offs in more detail.
Design, testing and launch
Good app design is more than screens. It covers the flows between them, error and empty states, accessibility and how the app behaves on different screen sizes. Time spent here saves rework in development.
Testing on real devices, beta releases and store submission also take time. Apple and Google review every app and update, and a rejection for a missing privacy disclosure can delay a launch. Our pre-launch QA checklist lists what to check.
After launch: the running costs
An app is never finished. Plan for these ongoing costs:
- ✓Apple Developer Program membership ($99 a year) and a one-time $25 Google Play registration
- ✓Store commission on paid apps and in-app purchases, typically between 15% and 30%
- ✓Hosting and services for the backend, push notifications and analytics
- ✓Updates for each new iOS and Android release
- ✓Bug fixes, monitoring and new features based on user feedback
How to keep the first version focused
Decide on the one job the app has to do well for its first users, and build only what that job needs. Everything else goes on a list for later releases, once real usage shows what matters. Our guide on how to plan an MVP app walks through this step by step.
Modus Venture is a US-founded creative digital agency. If you would rather have an experienced team handle this for you, see our mobile app development services.