# Hinge Protractor vs AngleDuo

The clearest difference is in-app purchases: Hinge Protractor at none against AngleDuo's 1. AngleDuo's advantage is iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. AngleDuo sells 1 one-off in-app purchase. Hinge Protractor asks for nothing beyond the download.

## The numbers

| Metric | Hinge Protractor | AngleDuo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 6 MB | 4 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maksim Tatarchenkov](https://appshunter.io/developer/6810974884) | [Julian Zefferer](https://appshunter.io/developer/1894212252) |

## What reviewers say

### Hinge Protractor

[App page](https://appshunter.io/ios/app/hinge-protractor/id6812223231)

**Features:** Vision Pro support

**In-app purchases:** none


### AngleDuo

[App page](https://appshunter.io/ios/app/angleduo-protractor/id6813894841)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AngleDuo Pro | $3.99 | one-time |


## Frequently asked questions

### Is Hinge Protractor free?

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

### Is AngleDuo free?

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

### Do Hinge Protractor or AngleDuo have ads?

Neither Hinge Protractor nor AngleDuo shows ads.

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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.*