I thought it would be best simply to show the accuracy by writing this text with the application itself. If the user doesnt make a major mistake or tries to write a word that has a similarly spelled twin like none and bone, the app works great. In the case described above, working alternatives are proposed, so usually you find the word you meant in an instant. This text took me about two minutes top write and I had to correct myself about 4 times, but mostly due to the fact that I made a mistake myself. The app was perfect if one could set it as system keyboard. This would be my immediate feature request. If this could be used in messengers or for SMS it would be the most powerful keyboard.