# Hinge Protractor vs FoldMetry

The clearest difference is in-app purchases: Hinge Protractor at none against FoldMetry's 1. FoldMetry's advantage is update cadence (every 6 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

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

Hinge Protractor ships an update fortnightly, FoldMetry every 6 days. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Hinge Protractor | FoldMetry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 6 days** |
| Size | 6 MB | 5 MB |
| Requires iOS | **26.0** | 27.1 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maksim Tatarchenkov](https://appshunter.io/developer/6810974884) | [亚军 胡](https://appshunter.io/developer/1724305749) |

## What reviewers say

### Hinge Protractor

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

**Features:** Vision Pro support

**In-app purchases:** none


### FoldMetry

[App page](https://appshunter.io/ios/app/foldmetry/id6823964054)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Optional Developer Support | $0.99 | one-time |


## Frequently asked questions

### Is Hinge Protractor free?

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

### Is FoldMetry free?

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

### Do Hinge Protractor or FoldMetry have ads?

Neither Hinge Protractor nor FoldMetry shows ads.

### Which is updated more often, Hinge Protractor or FoldMetry?

Hinge Protractor ships an update fortnightly, and FoldMetry every 6 days. Most recently, Hinge Protractor was updated on October 31, 2026 and FoldMetry on November 1, 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.*