Kalkulko: Quick Math

Kalkulko turns a short arithmetic practice session into a game with a clear finish. Choose the number of questions, number range, and operations. The timer starts with the game, and every answer gets immediate feedback.

Review your recorded answers and the correct solutions in a history of the last 50 completed games, saved on this device. Choose a saved game to practice its mistakes without a timer or leaderboard.

Features:
• addition, subtraction, multiplication, and division
• sets of 10, 20, 50, or 100 questions
• number ranges up to 10, 20, 50, or 100
• results with time, correct and incorrect answers, score, and rank
• local and online leaderboards for each game setup
• a daily challenge and result history
• a result image ready to share
• a duel on the same question set using a six-digit numeric room code

Kalkulko automatically uses a supported phone language and is available in ten languages.

The app is free, has no ads or in-app purchases, and requires no school account. It provides brief math practice; it does not replace teaching or promise academic results.

Recent changes:
Kalkulko now supports Slovak throughout the game, results history, mistake practice and leaderboards. The language follows your phone settings.