You can keep track of your progress by tapping on the "Stats" tab.
So far, we offer the following statistics:
1. The number of days in the app.
2. The number of learned rules (blue), words (orange) and sentences (green).
3. The statistics (time spent in the app, number of learned rules, words and sentences) per 1 day, one week and one month.
4. The status of the batteries (words and sentences).