Ask HN: Learning iOS development without a Mac?

Is it feasible? Does using something like Flutter or React Native lend itself better to non-XCode development compared to say Swift?

Also, my Apple Developer account I got from a security bounty just expired and I won’t be renewing it ~ will I still be able to put apps I write onto TestFlight/distribute somehow (but not App Store)

I do have an old Mac but it’s stashed away unused - would rather work with android than use MacOS though.