Copy old app from iPad to replace a new non working app on an old iPhone
I mistakenly updated an app on my old iPhone (which used off line on my bike) which does not work because the developers changed some code which does not work with my iPhone 6. I still have the previous version on my iPad which works, but I can't use that on my bike! I want to replace the iPhone app with the one on my iPad--or from someplace else. How can I do that? The developer says it is against Apple policy for them to "send" me the previous app version, but in their release notes they never mention it will not work on iPhone 6. If it matters--the app is CYC Motors, Ride Control App from the Apple store.
iPad Pro, iPadOS 17