# FoldMetry — Your fold, in degrees

> Your fold, in degrees (iPhone/iPad app by 亚军 胡.)

- Source: https://appshunter.io/ios/app/foldmetry/id6823964054 (this page in markdown: same URL + `.md`)
- Developer: [亚军 胡](https://appshunter.io/developer/1724305749)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 27.1 · 5 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-10-19
- Data updated: 2026-11-01

## What is FoldMetry?

Open your iPhone Duo. See the angle at a glance.

FoldMetry puts the current hinge angle front and center. The number moves as your device opens and closes, with a clean display that stays out of your way.

Have a position in mind? Set a target angle and feel a gentle tap when you reach it. Save more than one for the angles you use often.

The app follows your device’s Light or Dark appearance, and measurements stay on your device.

All measuring features are free. If FoldMetry earns a spot in your day, you can leave a one-time tip to support its independent development. Tips don’t unlock extra features.

Hinge angle measurement is available only on iPhone Duo. Other iPhones and iPad can view device support information but cannot measure hinge angles.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Is FoldMetry safe?

Not enough ratings yet to assess FoldMetry.

## Is FoldMetry legit?

FoldMetry appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for FoldMetry is 63 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.1.0 — 2026-10-31

Introducing FoldMetry!

- Duo Angle has a new name: FoldMetry.
- Added a dedicated screen for unsupported devices.
- Added a link to learn more about iPhone Duo on Apple's website.
- Kept developer support and contact options easy to access.

The angle-measuring experience remains simple and focused.

### 1.0.1 — 2026-10-25

Added links to the GitHub project and developer contact email, making it easier to explore Duo Angle and get in touch.

### 1.0 — 2026-10-19

No release notes.

## More apps by 亚军 胡

- [ChemPlay](https://appshunter.io/ios/app/chemplay/id6475630706)

All apps by 亚军 胡: https://appshunter.io/developer/1724305749

## Related topics

[angle meter pro](https://appshunter.io/ios/topics/angle-meter-pro) · [multi angle meter](https://appshunter.io/ios/topics/multi-angle-meter) · [hold the angle](https://appshunter.io/ios/topics/hold-the-angle) · [angle reader](https://appshunter.io/ios/topics/angle-reader) · [popular angle measurement apps](https://appshunter.io/ios/topics/popular-angle-measurement-apps) · [angle meter & cobb angle meter](https://appshunter.io/ios/topics/angle-meter-cobb-angle-meter)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-01.*