# 毛发检测仪 vs AR Protractor

The clearest difference is in-app purchases: 毛发检测仪 at none against AR Protractor's 1. 毛发检测仪 also leads on iOS requirement (13 vs 16). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. AR Protractor sells 1 one-off in-app purchase. 毛发检测仪 asks for nothing beyond the download.

毛发检测仪 ships an update fortnightly, AR Protractor every 3 weeks. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 毛发检测仪 | AR Protractor |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 19 MB | 2 MB |
| Requires iOS | **13** | 16 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [有发 赖](https://appshunter.io/developer/1061367764) | [晓强 江](https://appshunter.io/developer/6775869180) |

## What reviewers say

### 毛发检测仪

[App page](https://appshunter.io/ios/app/id1155366692)

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

**In-app purchases:** none


### AR Protractor

[App page](https://appshunter.io/ios/app/ar-protractor/id6788215923)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all features | $4.99 | one-time |


## Frequently asked questions

### Is 毛发检测仪 free?

毛发检测仪 is free to download, with no in-app purchases.

### Is AR Protractor free?

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

### Do 毛发检测仪 or AR Protractor have ads?

Neither 毛发检测仪 nor AR Protractor shows ads.

### Which is updated more often, 毛发检测仪 or AR Protractor?

毛发检测仪 ships an update fortnightly, and AR Protractor every 3 weeks. Most recently, 毛发检测仪 was updated on November 2, 2026 and AR Protractor on October 28, 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.*