Anzan Sense
Flash mental math trainer
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$0.49 Free
In-App Purchases
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Price history
About
Numbers flash one at a time and you add them up in your head. A simple but deep flash mental math game. Three modes and flexible settings train your calculation, focus and working memory.
Three modes
- Standard: add the flashing numbers (the basic mode)
- Listen: numbers are not shown, they are spoken aloud. Listen and add
- Dual: two columns flash at once. Enter each total
Settings
- Difficulty: 4 levels (changes the flashing speed)
- Digits: 1-digit / 2-digit / 3-digit
- Numbers per problem: 5 to 20
- Problems per session: 3 to 15
Extras (optional spice)
- Letter noise: hiragana / kanji mix in. Ignore them and add only numbers
- Conditional rules: star doubles your total, diamond triples it, triangle subtracts
- Photo distraction: your own photos flash in briefly (with permission)
Records
Your correct count and accuracy are tracked. Beat your best accuracy per mode and difficulty!
No ads. No in-app purchases. No data collection.
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What's New in Anzan Sense
1.0.4
July 19, 2026
• Fixed an issue where tapping a locked difficulty or digit count sometimes didn't open the purchase screen. Now tapping anywhere on a locked option opens Premium right away. • Added guidance when photo access isn't allowed, with a button to open Settings. • Locked the layout to portrait for a more stable experience. • Added Stats — see your accuracy trend and your strong/weak spots by difficulty at a glance. • Added Auto Start — begin at a difficulty matched to your recent results. • Fixed several small issues with music, sound effects, and purchases.
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In-App Purchases
$0.49
Anzan Sense Premium
Unlock Normal, Hard, and Extreme across all modes.
