# 松鼠鎖 vs ppotaa

The clearest difference is in-app purchases: ppotaa at none against 松鼠鎖's 3. ppotaa also leads on device support (3 vs 1). 松鼠鎖's advantage is ads (none vs shown) and update cadence (every 3 days vs every 3 weeks). On price and iOS requirement there is nothing between them.

Both are free to download. 松鼠鎖 sells 3 in-app purchases, starting at $4.99 per month. ppotaa asks for nothing beyond the download.

松鼠鎖 ships an update every 3 days, ppotaa every 3 weeks. The most recent releases landed on August 18, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 松鼠鎖 | ppotaa |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/ppotaa/id6777933743/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 115 MB | 79 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Evan Tsai](https://appshunter.io/developer/1895553439) | [Fluffy Lab](https://appshunter.io/developer/6777933745) |

## What reviewers say

### 松鼠鎖

[App page](https://appshunter.io/ios/app/app/id6763912454)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 松鼠鎖 Premium - 月訂閱 | $4.99 | per month |
| 松鼠鎖 Premium - 年訂閱 | $29.99 | per year |
| 松鼠鎖 Premium - 終身使用權 | $99.99 | one-time |


### ppotaa

[App page](https://appshunter.io/ios/app/ppotaa/id6777933743)

This app helps you build study habits by connecting you with friends in virtual classrooms. Track your progress, customize your avatar, and stay motivated with rewards and a mood calendar.

**Highlights:** Social study rooms with friends, Study time tracking by subject, Daily, weekly, monthly stats, To-do list management, Mood calendar and satisfaction logging, Character and desk customization, Study streak and star rewards

**In-app purchases:** none


## Frequently asked questions

### Is 松鼠鎖 free?

松鼠鎖 is free to download, with in-app purchases available.

### Is ppotaa free?

ppotaa is free to download, with no in-app purchases.

### Do 松鼠鎖 or ppotaa have ads?

ppotaa shows ads; 松鼠鎖 does not.

### Which is updated more often, 松鼠鎖 or ppotaa?

松鼠鎖 ships an update every 3 days, and ppotaa every 3 weeks. Most recently, 松鼠鎖 was updated on August 18, 2026 and ppotaa on September 23, 2026.

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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.*