How long does it take to build a mobile app?

Timelines vary because "an app" ranges from a simple utility to a platform serving millions. But the phases are consistent — and knowing them helps you plan realistically.

Realistic timelines by complexity

• Simple app / MVP: 8–12 weeks.
• Mid-complexity app: 3–6 months (accounts, backend, payments, admin).
• Complex app / platform: 6–9+ months (real-time, AI, integrations, high scale).
• Adding AI features: +2–6 weeks depending on scope. (See adding AI to your app.)

The phases explained

1. Discovery (1–2 weeks): goals, scope, user research and a clear roadmap.
2. Design (2–4 weeks): wireframes, UI design and interactive prototypes.
3. Development (4–20+ weeks): built in agile sprints with working software every 1–2 weeks.
4. Testing & QA (ongoing + 1–2 weeks): functionality, performance, security and device testing.
5. Launch (1 week): App Store & Play Store submission and release.

What slows projects down

• Unclear scope and shifting requirements mid-build.
• Slow feedback and approvals from stakeholders.
• Scope creep — adding "just one more feature" repeatedly.
• Poor communication causing rework.

How to launch faster (without cutting corners)

The fastest path to launch is a sharp MVP: build the core value first, ship it, learn, then iterate. You'll launch months sooner and build the right features next.

• Prioritize ruthlessly — launch with the essential features only.
• Use an experienced team with a proven agile process.
• Give fast, decisive feedback each sprint.
• Consider cross-platform to cover both stores at once.