Luminous Future Technology
Kanji Concentration
Kanji Concentration

Kanji Concentration

Test your instant memory with kanji cards

iPhone iOS 17+
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About

Overview

How sharp is your memory? Kanji Concentration is a card-matching game that challenges you to memorize card positions instantly and find all the pairs. Each card shows a single kanji on an abstract background that embodies its meaning, so you train concentration, instant memory, and kanji recognition at once. HOW TO PLAY 1. Memorize Phase: All cards are revealed for a limited time. Remember their positions! 2. Answer Phase: Cards are flipped face down. Use your memory to find matching pairs. 3. Find all pairs to clear the stage! DIFFICULTY - Easy (2×4, 10 s to memorize) / Normal (4×4, 5 s) / Hard (4×6, 3 s) - In Hard, card positions shuffle after the memorize phase - Endless mode: fixed 4×4 grid, one miss and you're out, with rising difficulty FEATURES - Rich Japanese-style design (ink black, golden yellow, vermilion) - Kanji are read aloud when you flip a card (can be turned off in settings) - Fully offline - No data collection, no ads - VoiceOver support

Latest Versions

Latest version

  • iPhone 1.0.0 (Build 2) Released: 2026-08-21 ・ Min OS: iOS 17+

App-side updated: 2026-08-21

What's New

Release notes

- Initial release
- Kanji-card concentration game (memorize phase + answer phase)
- Easy / Normal / Hard difficulties plus Endless mode
- Results display (turns and clear time)
- Kanji read-aloud, sound effects, and haptic feedback (each can be toggled)
- VoiceOver support
Screenshots

Kanji Concentration

Kanji memory match in a sumi-ink and gold Japanese style
Kanji memory match in a sumi-ink and gold Japanese style
Memorize phase: learn the card positions before time runs out
Memorize phase: learn the card positions before time runs out
Hard mode: 24 cards with only 3 seconds to memorize
Hard mode: 24 cards with only 3 seconds to memorize
Recall phase: flip the cards and find the pairs from memory
Recall phase: flip the cards and find the pairs from memory
Clear the board to earn points, with turns and time recorded
Clear the board to earn points, with turns and time recorded
Toggle voice reading, sound effects, and haptics in settings
Toggle voice reading, sound effects, and haptics in settings
Support

Support / FAQ

Frequently asked questions about Kanji Concentration and how to contact us.

  • A concentration (memory-matching) game played with cards that each show a single kanji. Unlike classic concentration, every card is first revealed face up for a limited time in the Memorize Phase. Once the cards flip over in the Answer Phase, use your memory to find the matching pairs. Clear all pairs to win.

    • Easy (2×4, 10 s to memorize) / Normal (4×4, 5 s) / Hard (4×6, 3 s): more cards and less time to memorize them.
    • Hard: card positions are shuffled after the Memorize Phase ends.
    • Endless: a fixed 4×4 grid where a single miss ends the run, with difficulty rising as you progress.

  • iPhone running iOS 17 or later.

  • No ads are shown, and there are no in-app purchases. The game is completely free.

  • Neither. The app works fully offline.

  • Your read-aloud, sound-effect, and vibration settings are stored on your device only. Play records such as scores or your Endless stage progress are not saved. Nothing is sent to LFT servers. Note that deleting the app also deletes this data.

  • Yes. Kanji read-aloud (on by default), sound effects, and haptic feedback can each be toggled in the in-app settings. If you hear no sound, also check your device's silent switch and volume.

  • Yes. Cards and controls have accessibility labels.

  • If your question isn't answered above, feel free to reach out.

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