IOS developer: app from detailed spec and existing Swift source

Skippers Online is a UK online sailing school. Our lessons app, "Skippers Lessons", is finished and working on Android and Windows. We now need an experienced iOS developer to bring the iPhone/iPad version to the App Store.

The code is already written. The Swift source for the iOS app has been written with Claude (Anthropic's AI) from a detailed technical handover, but it has not yet been compiled or run, because it was written without a Mac. Your job is to turn it into a working, published app.

What the app does:
- Students sign in with their Skippers Online account (or continue as a guest)
- They download narrated HTML5 lessons (roughly 100-200 MB each) and play them offline
- Access to each course is controlled by the server; lessons can be deleted to free space
- Password reset happens inside the app

What you'll receive:
- The Swift source files (WKWebView, background URLSession downloads, Keychain, ZIPFoundation), iOS 17+, universal iPhone and iPad
- The shared lesson-list screen (one HTML page, used unchanged by all our apps)
- A 25-page handover document covering the design, the server calls and a full test checklist
- The working Android app and source code for reference
- The server side is complete and live: you won't need to change it

Your job:
- Set up the Xcode project from the supplied code and get it building
- Fix whatever doesn't compile or doesn't behave correctly on a real iPhone and iPad
- Test against the checklist (sign-in, guests, downloads in the background, offline playback, audio with the silent switch on, and so on)
- Set up TestFlight, then take the app through App Store review to release, under our own Apple Developer account (you'll be added as a team member)

Requirements:
- Proven apps in the App Store; please include links
- Experience with WKWebView, background downloads and App Store submission
- Willing to work with existing code rather than rewrite it
- UK-based or able to work UK hours is a plus

How we'll maintain it: we intend to keep maintaining the app with Claude after handover, including Apple's yearly rebuild. So please keep it simple to pick up: plain Swift with as few third-party libraries as possible, clear comments, a README covering setup, build and release, and a build that runs from the command line (xcodebuild) as well as in Xcode. You're welcome to use AI tools such as Claude Code yourself.

At the end we must receive the full Xcode project and source code; we own all rights to the work.

In your proposal, please give:
1. A fixed price for getting the supplied code working and released, with your estimated timescale
2. A price for the yearly update Apple requires (rebuilding with the current Xcode and resubmitting), as a fallback
3. Links to two or three apps you've built

Shortlisted applicants will receive the code and the full handover pack.