Frequently Asked Questions
Everything you need to know about Calcul Mental Challenge
Everything you need to know about Calcul Mental Challenge
Yes, it is completely free, with no ads and no in-app purchases. Available on Windows, Mac, Android and iOS.
The teacher installs the app on their computer, creates a room in 30 seconds, then students join using the code displayed via the school's WiFi. Real-time leaderboard, CSV/PDF export, detailed report with each student's errors. See the full tutorial.
From CE1 (1st grade) to high school (10th grade) plus a Competition mode. 10 levels that follow the national curriculum: simple addition in CE1 (1st grade), multiplication tables in CE2–CM2 (2nd–4th grade), fractions and powers in middle school.
The Table Training mode lets you choose the operation (addition, multiplication, division), the table (1 to 15) and the game style. A badge is unlocked for each table completed without errors.
A teacher can pit two of their classes against each other for a week. Each day has a different theme (tables on Monday, fractions on Saturday…), 3 attempts per student. Each student's best score contributes to their class total. Learn more.
A competitive mode where schools compete against each other. Once 3 players from the same school join, the school is automatically registered. Weekly leaderboard with Primary / Middle School / High School categories.
Yes. In classroom mode, data stays on the school's local network. GDPR compliant with data export and deletion. No cookies, no ad trackers. See the privacy policy.
Yes. Solo mode works entirely offline. Only multiplayer modes and online leaderboards require an internet connection.
Each player receives an 8-character recovery code (visible in their profile). Simply enter it on the new device to restore your progress, badges, records and settings.
Windows (10/11), macOS (11+), Linux (AppImage, .deb), Android (8+) and iOS (16+). Automatic updates on desktop. Download.