Introduction
"How long will our app take" is one of the first questions every founder asks, and the honest answer depends heavily on scope — but there are real patterns worth knowing before setting expectations with investors or a launch date.
Simple Single-Feature Apps
An app built around one core feature — a booking flow, a simple content feed, a single-purpose utility — using a cross-platform framework like Flutter or React Native typically takes 30–45 days for a functional, launch-ready MVP, assuming off-the-shelf backend infrastructure.
Standard Business Apps
Apps requiring multiple connected features (browsing, checkout, user accounts, notifications) with a custom backend typically run 45–60 days. This covers the majority of startup mobile MVPs — ecommerce, marketplace, and service-booking apps fall into this range.
Complex or Enterprise Apps
Apps requiring offline-first architecture, complex permissions, integrations with external business systems, or heavy real-time functionality typically need 60–90 days or more for a production-ready first version, given the additional testing and edge-case handling these systems require.
What Extends the Timeline
App store review adds 1–7 days depending on the platform and whether the app triggers manual review. Third-party integrations with unfamiliar APIs, and payment processing setup, are common sources of unplanned delay that founders should budget buffer time for rather than assume will go smoothly.
Conclusion
Most startup mobile MVPs land in the 30 – 60 day range with the right scope discipline. Anything promising a fully custom, feature-rich app in under three weeks is either underscoping the real requirements or overpromising the timeline.
Frequently Asked Questions
What's a realistic timeline for a simple mobile app MVP?+
Around 30–45 days for an app built around one core feature using a cross-platform framework and off-the-shelf backend infrastructure.
Does app store review add much time to a launch?+
Typically 1–7 days depending on the platform, though this can extend if the app triggers manual review or has issues on first submission — worth budgeting buffer time for.
What commonly causes mobile MVP timelines to slip?+
Unfamiliar third-party integrations and payment processing setup are among the most common sources of unplanned delay, more so than the core feature development itself.