# Sobo Math — HK P4–P6 Math · Cantonese

> HK P4–P6 Math · Cantonese (iPhone/iPad app by kwok wai yeung.)

- Source: https://appshunter.io/ios/app/sobo-math/id6785965928 (this page in markdown: same URL + `.md`)
- Developer: [kwok wai yeung](https://appshunter.io/developer/1887192726)
- Category: Education, Games, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 37 MB
- Languages: American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-08-18
- Data updated: 2026-09-20
- User reviews in markdown: https://appshunter.io/ios/app/sobo-math/id6785965928/reviews.md

## What is Sobo Math?

Your child may not be “bad at maths”—they may be using an app built for another curriculum. Sobo Math follows Hong Kong EDB Key Stage 2 (Primary 4–6): 41 units and 231 stages on one clear map. This is an independent app, not an official EDB product.

Why families choose us
• Mapped to HK P4–P6: number, measures, shape, data, algebra
• 4,900+ questions with interactive visuals and step-by-step help (not every item has a diagram)
• Traditional Chinese, Simplified Chinese, and English text; Cantonese, Mandarin, and English read-aloud—script and voice can be set separately
• Daily path, quests, and streaks
• Sobo grows with practice XP (no pay-to-skip evolution)
• Parent report: all weak-skill names free; one-tap practice on the first gap
• Offline lessons, no third-party ads, no account

Free includes every unit in order (daily energy limits how fast; later units unlock after earlier ones). Mock exam: 10 questions untimed.

PRO: skip-ahead, unlimited energy, timed mocks (20–35 questions by year), unlimited adaptive review, full parent shortcuts and export.

Practice papers here are school-style drills, not official TSA or school exam papers.

Start free. Yearly plan may include a trial for eligible new subscribers (App Store terms).

Subscriptions: Monthly HK$78 / Yearly HK$588 (~HK$49/mo). Auto-renews; cancel in Apple ID settings.
Privacy: https://sisiyeung1126-max.github.io/math-games-ios/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| 小學數學大冒險 | $9.99 | per month |
| PRO Yearly | $69.99 | per year |



## Version history (last 5 releases)

### 3.1 — 2026-09-19

More units, play first

• Units 21–35 kid launch: try the toys first, then answer, with clearer tracks
• P6 workshops and parallelogram height practice are easier to see
• Smoother read-aloud and chrome; quizzes no longer crowd the toys
• 41 Hong Kong P4–P6 units · 231 stages · 4,900+ questions
• Script and voice stay separate: Traditional / Simplified / English × Cantonese / Mandarin / English
• PRO: unlimited energy · skip ahead · 7-day yearly trial if eligible

### 3.0 — 2026-09-14

More workshops, smoother answers

• Compass, kiln, twin-bar and decimal-express workshops: play first, then answer
• Confirm and Next respond on the first tap
• Place-value blocks no longer jump back; long-division cells are larger
• 41 Hong Kong P4–P6 units · 231 stages · 4,900+ questions
• Script and voice stay separate: Traditional / Simplified / English × Cantonese / Mandarin / English
• PRO: unlimited energy · skip ahead · 7-day yearly trial if eligible

### 2.9 — 2026-09-04

Big P5 workshop update — play first

• Common-denominator bakery, quilt, decimal lift, reciprocal cards, mystery box, balance scales, cut tiles: build first, then answer
• Clearer tracks, written Chinese beside the toys, quizzes no longer leak answers
• English copy more complete across chrome, mocks, practice and review
• 41 Hong Kong P4–P6 units · 231 stages · 4,900+ questions
• Script and voice stay separate: Traditional / Simplified / English × Cantonese / Mandarin / English
• PRO: unlimited energy · skip ahead · 7-day yearly trial if eligible

### 2.8 — 2026-09-01

Smoother workshops, play first

• More units now build first, then answer, with clearer tracks
• Written Chinese appears beside the toys; spoken help is smoother
• English copy is more complete across chrome, workshops and quizzes
• 41 Hong Kong P4–P6 units · 231 stages · 4,900+ questions
• Script and voice stay separate: Traditional / Simplified / English × Cantonese / Mandarin / English
• PRO: unlimited energy · skip ahead · 7-day yearly trial if eligible

### 2.7 — 2026-08-28

More workshops, start on your year

• 3D, compass diameter, cubes, tiles, Family Island, two-colour bar charts: build first, then answer
• P5 and P6 open straight on their year map
• Chart practice uses real labels and two colours, not dummy A-B-C
• 41 Hong Kong P4–P6 units · 231 stages · 4,900+ questions
• Script and voice stay separate: Traditional / Simplified / English × Cantonese / Mandarin / English
• PRO: unlimited energy · skip ahead · 7-day yearly trial if eligible

## More apps by kwok wai yeung

- [學學中文樂園](https://appshunter.io/ios/app/id6760996045)
- [小學中文大冒險-呈分試練習](https://appshunter.io/ios/app/id6761062579)

All apps by kwok wai yeung: https://appshunter.io/developer/1887192726

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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 2026-09-20.*