Should I build native iOS or cross-platform?
It depends on whether you need Android at launch and how much the app leans on platform capability. If iOS is the market and the experience matters, native SwiftUI gives the better result. If both platforms must ship together and the interface is largely shared, cross-platform is the cheaper honest answer. You will get a recommendation with reasoning rather than whichever is easier to build.
Do you have an app in the App Store I can look at?
Not a public one yet — mobile is the newest of these services and there is no shipped case study to point at. That is worth knowing before you hire anyone. What is verifiable is the engineering behind it: production systems with real clients, 429 automated tests on the IFTA agent, a shipped client web product tested with named techniques, and a full application with auth, database, uploads and payments already running.
How long does an app take?
A focused first release is typically six to twelve weeks depending on whether it needs a backend, accounts and sync. Apple's review adds a few days to a couple of weeks at the end. The written scope fixes the delivery date before work begins.
Do I need my own Apple Developer account?
Yes, and you should want it. It costs $99/year from Apple and it means the app is published under your name, with you in control of it. Setting it up and configuring App Store Connect is part of the project, but the account and the app belong to you, not to me.
What if Apple rejects the app?
Handling review feedback and resubmitting is part of the engagement, not an extra. Submissions are prepared to avoid the usual rejection reasons — privacy declarations, permission strings, incomplete metadata, sign-in requirements. What nobody can promise is approval itself, since that is Apple's decision.
Can you add features later?
Yes, and the architecture exists so that is cheap rather than a rewrite. Later work is quoted per change or at $90/hour. Because the repository and accounts are yours, you are equally free to take it to another developer — the code is written and documented with that in mind.
Do you do the design as well?
Interface design is part of the build, working from platform conventions rather than a blank canvas — which is usually what an app should do anyway. If you need a full brand identity or a designer-led visual concept, that is worth bringing a specialist in for, and the build will work to their designs.