# 毛毛虫 vs FireDone

The clearest difference is update cadence: FireDone at weekly against 毛毛虫's monthly. 毛毛虫's advantage is iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support 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 and FireDone sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

毛毛虫 ships an update monthly, FireDone weekly. The most recent releases landed on September 12, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 毛毛虫 | FireDone |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Size | 30 MB | 7 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [英杰 赵](https://appshunter.io/developer/1868268026) | [骋 张](https://appshunter.io/developer/1562425831) |

## 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 |


### FireDone

[App page](https://appshunter.io/ios/app/firedone/id6761127633)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FireDone Pro | $6.99 | one-time |


## Frequently asked questions

### Is 毛毛虫 free?

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

### Is FireDone free?

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

### Do 毛毛虫 or FireDone have ads?

Neither 毛毛虫 nor FireDone shows ads.

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

毛毛虫 ships an update monthly, and FireDone weekly. Most recently, 毛毛虫 was updated on September 12, 2026 and FireDone on September 20, 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.*