I have been using Raycast with its integrated AI spell checking and I am completely impressed with the results. I would love to find an equivalent solution for iOS. When I look in the App Store, there are so many options and many of them are overly expensive. I wish I could find out if there is a consensus on a clear winner. One with the ability to create your own saved prompts would be ideal.
Just a friendly reminder that the build-in keyboard for iOS is getting an upgrade with the next iOS release. So maybe check that one out when it is released.