# 小牛错题本 vs Organize Practice Mistakes

The clearest difference is in-app purchases: Organize Practice Mistakes at none against 小牛错题本's 4. Organize Practice Mistakes also leads on update cadence (every 2 days vs monthly). 小牛错题本's advantage is iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. 小牛错题本 sells 4 in-app purchases, starting at $2.99 per month. Organize Practice Mistakes asks for nothing beyond the download.

小牛错题本 ships an update monthly, Organize Practice Mistakes every 2 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 小牛错题本 | Organize Practice Mistakes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Size | 105 MB | 44 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [深圳市云领天下科技有限公司](https://appshunter.io/developer/725440563) | [侨 唐](https://appshunter.io/developer/1805445909) |

## What reviewers say

### 小牛错题本

[App page](https://appshunter.io/ios/app/id6474232623)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 小牛错题本连续包月（1个月） | $2.99 | per month |
| 小牛错题本连续包季（3个月） | $5.99 | per 3 months |
| 小牛错题本会员1个月 | $3.99 | one-time |
| 小牛错题本会员6个月 | $14.99 | one-time |


### Organize Practice Mistakes

[App page](https://appshunter.io/ios/app/organize-practice-mistakes/id6782930888)

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

**In-app purchases:** none


## Frequently asked questions

### Is 小牛错题本 free?

小牛错题本 is free to download, with in-app purchases available.

### Is Organize Practice Mistakes free?

Organize Practice Mistakes is free to download, with no in-app purchases.

### Do 小牛错题本 or Organize Practice Mistakes have ads?

Neither 小牛错题本 nor Organize Practice Mistakes shows ads.

### Which is updated more often, 小牛错题本 or Organize Practice Mistakes?

小牛错题本 ships an update monthly, and Organize Practice Mistakes every 2 days. Most recently, 小牛错题本 was updated on October 24, 2026 and Organize Practice Mistakes on October 28, 2026.

---

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