A mobile apps development service should open with the requirement rather than the platform, because the three routes differ by roughly an order of magnitude in cost.
Getting that choice right in week one is the largest single saving available on this kind of project.
What a Mobile Apps Development Service Should Ask First
A progressive web app. No store, no review queue, no separate release cycle. Installs to the home screen, works offline, and sends push notifications on both platforms. Where you do not need the camera at depth, background location or hardware the browser cannot reach, this is often the honest answer.
Cross-platform, with React Native. One codebase, both stores, native components underneath. Right when you genuinely need store presence and the interface is conventional.
Fully native. Swift and Kotlin, two codebases, two release cycles. Right when the app is the product, when performance or hardware access is the point, or when platform conventions matter enough that users would notice.
The route follows your requirement, and we will explain the reasoning rather than assert it.
How the Route Gets Chosen
Four questions settle it: what hardware the app touches, whether it must work with no signal, whether store presence is part of the sales story, and how often you plan to release.
Answer those and the route is usually obvious. Where two remain plausible, we build the riskiest screen twice and measure, which costs a couple of days and removes the argument.
What It Costs After Launch
Both platforms ship annually and both deprecate, so an app needs attention to stay installable, keep passing review, and keep running.
We put the annual maintenance figure in the original quote, which is the line most proposals leave out and the one that decides the three-year cost.
Store review is a real dependency, which is why feature flags and remote configuration are part of the build. An urgent fix should not wait two days in a queue.
What We Build
The application, the API behind it, and the account and sync layer between them, which is where the real difficulty lives.
Offline behavior, and conflict resolution when the same record was edited on two devices, separate an app that works from a demo that worked.
Push infrastructure, store submission and the release pipeline are included rather than handed back at the end. Our mobile apps development service covers the week after the binary, which is the hardest one.
Senior People Through First Release
The engineer who chooses the route ships the first release, so the architecture matches the requirement it was picked for.
You get the repository from the first commit, the release pipeline, the store listings and the runbook for shipping a new version. Tell us what somebody is meant to do with it and how often.
Related Services
The API and account system behind the app is web and API development. Where the product is multi-tenant, that is SaaS development.
Where the app has to talk to systems never designed for it, that is API integration.