Five agencies, five quotes, five numbers that don't seem to relate to each other at all. One says $8,000. Another says $60,000 for what sounds like the same app. Neither number is wrong, exactly - they're usually pricing different things and calling them the same word.
Most of the cost in a mobile app is not the buttons - it's the backend behind them.
The number depends on what you're actually asking for
"Build me an app like Instagram" and "build me a screen where a user logs in, browses a list, and taps to book" are not the same request, even if the pitch deck uses the same three sentences to describe both. Most of the cost in a mobile app is not the buttons - it's the backend behind them: authentication, a database that survives a phone going offline mid-action, payment handling, and whatever business logic makes the app actually useful rather than a static prototype.
A single-screen booking flow with no backend can be built in a couple of weeks. The same idea with real-time availability, payments, and admin tooling for the business behind it is a different project entirely - not because the screens look more complicated, but because the invisible half of the app got bigger.
What actually moves the price
Three things account for most of the swing between quotes.
- Platform count - one codebase for iOS and Android costs meaningfully less than building each natively, unless the app genuinely needs native-only capability
- How much of the design already exists - a finished Figma file removes a whole phase of guesswork and back-and-forth
- Third-party integrations - payments, maps, live chat, and push notifications each add real integration and testing time, not just a checkbox
Why the geography of the team changes the number, not the outcome
A senior engineer's hourly rate in the US or the UK is real, and it reflects real cost of living, not necessarily better code. The engineering practices that actually matter - clean architecture, tests that catch regressions, a deploy pipeline that doesn't require anyone to remember eleven manual steps - are a discipline, not a nationality. Teams based in India building for US and European clients can hold the same technical bar at a fraction of the hourly cost, because the price difference is regional economics, not a quality tax.
The honest way to compare two quotes that look wildly different is not to ask which is cheaper. It's to ask each agency to walk through exactly what they counted - screens, backend, integrations, testing, and who owns the app afterward. The number that survives that conversation is the real one.
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