So you could build iOS apps using Racket on a host computer, then load those binaries onto an iOS device.
So you could build iOS apps using Racket on a host computer, then load those binaries onto an iOS device.
Racket code bundled with the app will be fine.
The gray area is if the app allows the user to create new Racket code.
https://developer.apple.com/app-store/review/guidelines/
> 2.5.2 Apps should be self-contained in their bundles, and may not read or write data outside the designated container area, nor may they download, install, or execute code which introduces or changes features or functionality of the app, including other apps. Educational apps designed to teach, develop, or allow students to test executable code may, in limited circumstances, download code provided that such code is not used for other purposes. Such apps must make the source code provided by the Application completely viewable and editable by the user.