Mobile app development cost and timeline: what to budget

Founders usually ask two questions about a mobile app: what will it cost, and when can customers use it? Both depend on the same decisions. This guide explains the stages, the realistic timeline for a first release, and the choice that changes the budget most: native, or cross-platform.

A realistic timeline for a first release

1. Discovery and scope (1 to 2 weeks): who the app is for, the core journey, what is in version one and what waits.
2. UX and UI design (2 to 4 weeks): flows, wireframes, a clickable prototype and a visual design you test with a few real users.
3. Build (8 to 16 weeks): in two-week sprints with a working build at the end of each, so you can try the app on your own phone.
4. Testing and store submission (2 to 3 weeks): device testing, performance, accessibility, and the review process of the App Store and Google Play.

That puts a focused first release at roughly three to six months, and a simple app can be faster. Apple and Google reviews are rarely the bottleneck, but allow a few days of buffer for a rejection and resubmission.

Cost ranges to plan around

As general market ranges for a senior remote team: a simple app with a handful of screens and no complex backend commonly lands between $20,000 and $50,000. A mid-complexity app with accounts, payments, notifications and an admin panel is typically $50,000 to $120,000. Apps with real-time features, maps, offline sync or hardware integration go higher. Treat these as orientation, not a quote.

Native or cross-platform?

Cross-platform frameworks such as Flutter and React Native let one codebase serve both iPhone and Android. For most business apps, that is the better starting point: lower cost, faster releases and one team to maintain. Choose fully native (Swift and Kotlin) when you rely heavily on platform-specific features such as advanced camera work, background processing or the newest OS capabilities on launch day.

Costs people forget

• Backend and APIs. The app is the visible part; accounts, data and notifications need a server.
• App store fees and accounts: Apple Developer Program and Google Play registration.
• Maintenance. Plan for roughly 15 to 20 percent of build cost per year for OS updates, bug fixes and small improvements.
• Analytics and crash reporting, so you learn from real usage.

The best way to control cost is a tight first release: one core journey done well, shipped early, improved with real feedback. Add features only when users ask for them.