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.

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 nine 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.