The app is rarely just the app
Push notifications, auth, payments, and admin tools live on a server. A 'UI only' estimate is incomplete.
Cross-platform (React Native / Flutter) is often the right default for business apps. Native still wins for heavy device features or platform-specific polish.
Planning notes
A simple companion app to an existing web product costs less than a standalone marketplace with chat, maps, and offline mode.
App Store and Play policies, review delays, and your developer accounts are part of the timeline even when engineering is done.
This guide is educational. It is not a price quote or a promise of search rankings.
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