# Kioku?：Number Memory — Number span memory challenge

> Number span memory challenge (iPhone/iPad app by Yuichi Hiruta.)

- Source: https://appshunter.io/ios/app/kiokunumber-memory/id6782825314 (this page in markdown: same URL + `.md`)
- Developer: [Yuichi Hiruta](https://appshunter.io/developer/912365793)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English, Japanese, Korean, European Spanish
- Released: 2026-06-25
- Data updated: 2026-08-08
- User reviews in markdown: https://appshunter.io/ios/app/kiokunumber-memory/id6782825314/reviews.md

## What is Kioku?：Number Memory?

**Simple rules. Memorize the number, then type it back in the same order.**

A number appears on screen. Once it hides, tap it back in order on the custom number pad. Every correct answer adds another digit, so it keeps getting tougher. Miss, and you lose a life—run out and the game ends. How many digits can you reach?

Quick to play and easy to pick up, Kioku is a number-memory game made for short breaks and chasing a new high score. Perfect for the commute or any spare moment.

■ Features
• Pure number span: just memorize, then recall
• Gradual ramp-up: starts at a single digit and grows on a gentle curve
• Chunking hints: tips for grouping digits to remember them
• Tracks your best score and highest level reached
• A time bar and limit add just the right tension
• Satisfying sound effects and haptics
• Clean, dark, focus-friendly design
• Multiple languages (English, Japanese, Spanish, Korean)

■ Great if you
• Want a quick game for spare moments
• Love memorizing numbers and beating your own records
• Prefer calm, uncluttered game design

How far can your memory—your “Kioku”—go?

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |



## Version history (last 2 releases)

### 1.0.1 — 2026-06-27

Fix bug

### 1.0.0 — 2026-06-25

No release notes.

## More apps by Yuichi Hiruta

- [Pitch Timer](https://appshunter.io/ios/app/pitch-timer/id6475646596)
- [Reciclip -clip recipe-](https://appshunter.io/ios/app/reciclip-clip-recipe/id6788616734)

All apps by Yuichi Hiruta: https://appshunter.io/developer/912365793

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-08.*