Learn and practice the four basic operations: addition, subtraction, multiplication, division. Difficulty levels from first steps up to 3-digit problems. Randomized exercises with no repetition and instant feedback. Detailed stats with per-question review. Offline, ad-free, no data collection. Ideal for grades 1–4.

The app is available in the following languages: English, German, French, Italian, Spanish, Russian, Japanese, Korean, Hindi, and Hungarian.