# 1Know 翻轉你的學習 vs Sobo Math

The clearest difference is in-app purchases: 1Know 翻轉你的學習 at none against Sobo Math's 2. 1Know 翻轉你的學習 also leads on iOS requirement (10.0 vs 15.0). On price, ads 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. 1Know 翻轉你的學習 asks for nothing beyond the download.

## The numbers

| Metric | 1Know 翻轉你的學習 | Sobo Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Size | 8 MB | 28 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ischool Corporation](https://appshunter.io/developer/649707315) | [kwok wai yeung](https://appshunter.io/developer/1887192726) |

## What reviewers say

### 1Know 翻轉你的學習

[App page](https://appshunter.io/ios/app/1know/id1267703182)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 1Know 翻轉你的學習 free?

1Know 翻轉你的學習 is free to download, with no in-app purchases.

### Is Sobo Math free?

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

### Do 1Know 翻轉你的學習 or Sobo Math have ads?

Neither 1Know 翻轉你的學習 nor Sobo Math shows ads.

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