As on Google Play: vocabulary and fluency by answering in the language you train, not only by reading lists.
The store listing is explicit: play in English, French, German, Japanese, Arabic, Portuguese, and more. You pick the quiz language and the topic; AI builds the questions. Then you can generate more tests or take them into a live room.
Elena is preparing a business trip to France. Instead of a static handbook, she creates a theme of meeting phrases, travel, and grammar, picks a level, and trains every day with fresh questions.
To avoid studying alone, she challenges a colleague who is also learning French: same theme, same match, visible progress.
English, French, German, Japanese, Arabic, Portuguese, and more, per the Play Store listing.
Yes: you choose difficulty and the exact gap you have, not a generic beginner course.