Math Trainer, a quick and easy way to improve your mental arithmetic. Add, Subtract, Divide and Multiply through quick fire questions with four difficulties. Features: • Difficulty - Choose between 4 different difficulties depending on your level • Operators - Choose between all 4 operators • Game Center Leaderboards - Compete against players around the world for the fastest time in every difficulty and operator • Game Center Achievements - Earn over 20 achievements as you play the game • iCloud Sync - All Settings sync via iCloud so you can start with the same difficulty and challenge on all of your devices • Full iOS Support - Dark Mode, Split Screen, VoiceOver and much more • Privacy - No data is ever stored outside of your device and with no tracking or analytics • Pay Once - No ads or subscriptions, just regular free updates Available for iPhone and iPad. Also available for Mac and Apple TV included with your purchase.