I had an iPhone for three months until I switched back to Android because the keyboard was trash. The one thing I could not believe is how even SwiftKey on iOS is horrible, even though it's my default keyboard on Android, and I've been very happy with it.

This comment explains why:

https://www.reddit.com/r/ios/comments/1l2gg3r/thirdparty_ios...

tl;dr: gatekeeping by Apple. Yes, it would probably be embarassing to Apple if someone built a way better touch keyboard.

That definitely explains SOME of why SwiftKey is worse on iOS, but it doesn't explain much of it. It just seems like Microsoft never got it to feature parity.

3rd party keyboards are frequently banned from some of the bank apps, delivery services and so on.

This way you have to keep the default one anyway and make even more typos when yet another app forces you to get back to Apple’s keyboard.

I can’t even search stuff in my local delivery with SwiftKey

Oh that's really lame, I didn't know apps could do that.