The following activities result in gaining XP as of 08 November 2017:
- Successfully completing a lesson or Untimed practice.
- Completing a timed practice with at least one correct response. One point is awarded for each correct response.
- On mobile only:
- Achieving several correct answers in a row during a lesson (not during practice) can lead to getting up to 5 additional XP as a "Combo Bonus".
- Meeting the goal number of XP during a weekend challenge will result in an unspecified bonus of XP.
It is also noteworthy that, in the past, practicing old lessons did not always result in a fixed amount of XP. According to Luis von Ahn:
The idea is that the number of XP you earn now depends on how weak the words are in the lesson. Lessons in which all the words are already at maximal strength will only give you 3 XP, and lessons in which all words are at minimal strength will give you 10 XP.However, this seems no longer to be the case, as all untimed practices currently seem to offer 10 XP regardless of how strong or weak the practiced words are.
LevelEditIn addition to providing a way to track your daily activity and compete with your friends, XP also determine your language "level", which is displayed on your profile page and above your comments in discussions. This "level" is a measure of how much work you have put into the language. It is not a measure of your "level of mastery" in the language, which is measured by the fluency badge.
Each level requires reaching a certain amount of XP. The maximum level is 25. The XP requirements for each level are shown in the table to the right.