You can track your learning progress by comparing your EXPs (Experiences) or Levio Points to the average of other users. To view your progress, tap the button on the bottom right side of the screen to open the Profile page and tap the Progression tab. You'll see a chart showing your learning progress over a period of time. You can change the filter of the tracking method to EXPs or Levio Points and the filter time date to Weekly, Monthly, and Custom Date.
Besides using the chart, you can also track your learning progress by viewing your rank along with other users' rank in the leaderboard. To open the leaderboard page, tap the button on the top right side of the Progression page. The top three spots on the leaderboard are regularly contested by users with the highest EXPs. You can sort the ranks in the leaderboard by dates: Day, Weekly, Monthly, and Yearly.