Seems good to me, but
The app works, but it doesn't actually show me where the 'errors' may be at, and the corrections don't seem to work on certain apps or with the App Store
Yes, CorrectEnglish is completely free and it doesn't have any in-app purchases or subscriptions.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
CorrectEnglish is free.
To get estimated revenue of CorrectEnglish app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.
The app works, but it doesn't actually show me where the 'errors' may be at, and the corrections don't seem to work on certain apps or with the App Store