# LetCube: Cube Guide for Kids — Pick It Up, Turn, and Learn

> Pick It Up, Turn, and Learn (iPhone/iPad app by RUEI YI WU.)

- Source: https://appshunter.io/ios/app/letcube-cube-guide-for-kids/id6794867285 (this page in markdown: same URL + `.md`)
- Developer: [RUEI YI WU](https://appshunter.io/developer/1896714956)
- Category: Education, Games, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English, Chinese (Traditional, Taiwan)
- Released: 2026-08-06
- Data updated: 2026-08-17
- User reviews in markdown: https://appshunter.io/ios/app/letcube-cube-guide-for-kids/id6794867285/reviews.md

## What is LetCube?

LetCube turns cube solving into a visual learning game that children can understand and follow.

A matching 3D cube shows every change. Instead of memorizing formulas first, kids learn by turning, observing, checking, and correcting. A wrong turn is not failure—LetCube keeps collecting clues and always offers another useful step.

QUICK SCAN OR MANUAL INPUT
Photograph the six faces in numbered order and LetCube recognizes the whole cube. Every face can be reviewed, retaken, or fixed with a tap. The complete 3x3x6 color editor is always available when the camera is not.

STEP-BY-STEP 3D GUIDANCE
Every step is a real, gentle turn of the 3D cube with friendly arrows on the moving layer — no cryptic notation to decode. Play or pause, step back, step forward, at a pace you choose. Reduce Motion replaces animated effects with clear static guidance.

CUBE ACADEMY
Start with small lessons, then solve scrambled cubes, then play freely. Every finished round earns stars and points—full stars for solving alone, and stars are always earned even with hints. Levels grow with practice, so children can see their own progress.

KID-FRIENDLY THEMES
Choose classic colors, animals, or fruits. Themes change only the display—not cube recognition or solving. Narration, sound effects, and guide speed are adjustable.

FOR GROWN-UPS
- Completely free and ad-free
- No data collected; scanning, solving, and progress all work fully offline
- Camera images are processed only on-device, never saved or uploaded, and discarded immediately
- Settings and outbound links are protected by a grown-up multiplication gate
- An optional tip jar in the parent area is handled by Apple and unlocks nothing

From exploration and observation to a solved cube: pick it up, follow along, and learn.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Small Coffee | $0.99 | one-time |
| Medium Coffee | $4.99 | one-time |
| Large Coffee | $9.99 | one-time |



## Version history (last 2 releases)

### 1.1.20260808 — 2026-08-11

Cube Academy got nicer to play:

- The challenge ladder now greets you the moment you open the Academy: the app scrambles, your child solves, no physical cube needed
- A new rear-view mirror shows the cube's three hidden sides while turning, so following hints never loses you
- Swipe recognition is much more accurate: follow the arrow, and you get exactly the move the arrow points to
- The piece you grab gives a little pop, so kids know they caught the right one

Two new options in the parent area:

- If your child is enjoying LetCube, you can buy the developer a coffee. It unlocks nothing, removes no limits, and is handled entirely by Apple. It appears only behind the grown-up gate, never on your child's screen
- Besides the default math question, the grown-up gate can now use a 4-digit passcode instead (forgot it? delete and reinstall the app to reset)

This update also fixes a rare issue where the app could open to a black or frozen screen on some devices. Everything remains completely free.

### 1.0.20260727 — 2026-08-07

No release notes.

## More apps by RUEI YI WU

- [Lode: Notes, Voice & Scan](https://appshunter.io/ios/app/lode-notes-voice-and-scan/id6775551126)
- [SunnyWalker](https://appshunter.io/ios/app/sunnywalker/id6775802674)
- [LetPiano - Piano for Kids](https://appshunter.io/ios/app/letpiano-piano-for-kids/id6782109761)
- [五子棋小學堂 Gomoku Kids](https://appshunter.io/ios/app/gomoku-kids/id6784641055)
- [Go Kids: Weiqi & Capture](https://appshunter.io/ios/app/go-kids-weiqi-and-capture/id6784736767)
- [Bloomling: Learn & Safe Web](https://appshunter.io/ios/app/bloomling-learn-and-safe-web/id6785049588)

All apps by RUEI YI WU: https://appshunter.io/developer/1896714956

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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 2026-08-17.*