On the web, there is a feature to re-learn a complete level (I suppose this simply erases any learning history). This is useful for difficult words or a level that wasn’t learned well for whatever reason.
- allow also to select an individual entry for re-learning, rather than the whole level
- add this feature (both an individual entry and a whole level) to the app
- alternatively, have a ‘difficult’ mode that basically replants the words/level