# 写作火火 vs Nano Test

The clearest difference is in-app purchases: Nano Test at none against 写作火火's 3. Nano Test also leads on device support. On price and iOS requirement there is nothing between them.

Both are free to download. 写作火火 sells 3 one-off in-app purchases. Nano Test asks for nothing beyond the download.

## The numbers

| Metric | 写作火火 | Nano Test |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | — | Every 3 weeks |
| Size | 7 MB | 28 MB |
| Requires iOS | **15.3** | 15.6 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [丹丹 陈](https://appshunter.io/developer/1748582081) | [北京卡尤迪医学检验所有限公司](https://appshunter.io/developer/1247756729) |

## What reviewers say

### 写作火火

[App page](https://appshunter.io/ios/app/and-ai/id6475755921)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1个月会员 | $4.99 | one-time |
| 1年会员 | $9.99 | one-time |
| 终身会员 | $14.99 | one-time |


### Nano Test

[App page](https://appshunter.io/ios/app/nano-test/id6479969530)

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

**In-app purchases:** none


## Frequently asked questions

### Is 写作火火 free?

写作火火 is free to download, with in-app purchases available.

### Is Nano Test free?

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

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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.*