# 毛毛虫 vs TempoRail

The clearest difference is in-app purchases: TempoRail at none against 毛毛虫's 3. TempoRail also leads on update cadence (every 10 days vs monthly). 毛毛虫's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. 毛毛虫 sells 3 in-app purchases, starting at $4.99 per 7 days. TempoRail asks for nothing beyond the download.

毛毛虫 ships an update monthly, TempoRail every 10 days. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 毛毛虫 | TempoRail |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 10 days** |
| Size | 42 MB | 90 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [英杰 赵](https://appshunter.io/developer/1868268026) | [Beijing Youxuanzu Technology Co., Ltd.](https://appshunter.io/developer/6780778308) |

## What reviewers say

### 毛毛虫

[App page](https://appshunter.io/ios/app/raz/id6758662742)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员. | $4.99 | per 7 days |
| 半年会员 | $17.99 | per 6 months |
| 年度会员 | $24.99 | per year |


### TempoRail

[App page](https://appshunter.io/ios/app/temporail/id6790246930)

**In-app purchases:** none


## Frequently asked questions

### Is 毛毛虫 free?

毛毛虫 is free to download, with in-app purchases available.

### Is TempoRail free?

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

### Do 毛毛虫 or TempoRail have ads?

Both 毛毛虫 and TempoRail show ads.

### Which is updated more often, 毛毛虫 or TempoRail?

毛毛虫 ships an update monthly, and TempoRail every 10 days. Most recently, 毛毛虫 was updated on October 31, 2026 and TempoRail on October 25, 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.*