# Sobo Math vs ExamPaper King

The clearest difference is update cadence: Sobo Math at every 4 days against ExamPaper King's every 9 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sobo Math sells 2 in-app purchases, starting at $9.99 per month and ExamPaper King sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Sobo Math ships an update every 4 days, ExamPaper King every 9 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Sobo Math | ExamPaper King |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 9 days |
| Size | 28 MB | 46 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kwok wai yeung](https://appshunter.io/developer/1887192726) | [Sai Wai Law](https://appshunter.io/developer/1883967285) |

## What reviewers say

### Sobo Math

[App page](https://appshunter.io/ios/app/sobo-math/id6785965928)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

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


### ExamPaper King

[App page](https://appshunter.io/ios/app/exampaper-king-hk-primary/id6807743684)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 份卷額 | $3.99 | one-time |
| 30 份卷額 | $8.99 | one-time |


## Frequently asked questions

### Is Sobo Math free?

Sobo Math is free to download, with in-app purchases available.

### Is ExamPaper King free?

ExamPaper King is free to download, with in-app purchases available.

### Do Sobo Math or ExamPaper King have ads?

Neither Sobo Math nor ExamPaper King shows ads.

### Which is updated more often, Sobo Math or ExamPaper King?

Sobo Math ships an update every 4 days, and ExamPaper King every 9 days. Most recently, Sobo Math was updated on October 31, 2026 and ExamPaper King on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*