Flash vs Number Gym

Train your mental arithmetic with numbers that flash one at a time. Watch the sequence, add it in your head, and enter the total before the next round. Flash keeps practice simple: • Choose 1–7 digits and 2–500 numbers. • Set the display speed from 0.1 to 3.0 seconds. • Practice 1–999 rounds or keep going in Infinite mode. • Turn answer input and automatic continuation on or off. • Choose a light or blue background. • Use sound, haptic, or both for feedback. • Save your favorite settings as presets. • Check accuracy, response time, streaks, and total training time. • Review the exact number sequence for each round and retry mistakes. Use it for a quick session or a longer challenge. Flash gives you a clear way to practice at your own pace. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Train mental math, memory, and logic in five focused minutes a day. 21 short games that meet you at your level and grow as you do. No ads, no tracking, no streaks shaming you — just a calm daily practice for a sharper mind. THREE CATEGORIES, 21 GAMES • Arithmetic — 9 games for mental calculation: addition, multiplication, equations, missing numbers, fractions, percentages. • Memory & attention — 5 games to recall numbers, sequences, positions, and visual patterns — and to catch numbers at the edge of your vision. • Logic — 7 games for reasoning, pattern recognition, logic circuits, and rotating shapes in your head. ADAPTIVE DIFFICULTY Every game tunes itself to you. Each has its own rating from 0 to 100 — as you improve, questions get harder; when you struggle, they soften. You always play near your edge: never bored, rarely frustrated. DAILY CHALLENGE A new set of 30 questions every day, the same for everyone worldwide. Compare on the global leaderboard or among friends, and build a streak for consistent practice. CALM BY DESIGN No ads. No tracking across other apps. No shaming streaks, no flashing rewards, no addictive loops. Number Gym respects your attention — it's built to be put down, not to keep you hooked. COURSES WITH CERTIFICATES Structured lessons from basics to advanced — mental multiplication, fast addition, percentage tricks. Pass the final exam, earn a certificate, share it. FRIENDS & ARENA Add friends, follow their progress, and challenge them head-to-head. The weekly Arena ranks the most active players worldwide. PREMIUM Unlock the full game collection, all courses, and unlimited statistics — plus streak freezes, a Time Machine for missed Daily Challenges, and avatar frames. Monthly, annual, or lifetime plans. ALSO 80+ achievements to mark your progress. Fully localized in 20 languages, including right-to-left Arabic. PRIVACY We collect only what the app needs to work — your email, name, and game results. Nothing sold, nothing tracked across other apps. Open Number Gym and start with today's challenge. LEGAL Terms of Use (EULA): https://ioncreature.com/terms.html Privacy Policy: https://ioncreature.com/privacy-policy.html