We designed a simple app to help students learning English or students wishing to practice grammar skills. The app has no registration or backend database to store progress. All the progress is saved on the device.
There are no ads and it is free.
iOS:
https://apps.apple.com/us/app/egret-english-training/id1468163436?ls=1
Android: https://play.google.com/store/apps/details?id=com.egret.english
We think the simplicity of the app will help students focus on the questions.
Thanks for trying it out!