# Protractor Fold — Measure angles with the hinge

> Measure angles with the hinge (iPhone/iPad app by BRANDON ALAN INKEL.)

- Source: https://appshunter.io/ios/app/protractor-fold/id6831920017 (this page in markdown: same URL + `.md`)
- Developer: [BRANDON ALAN INKEL](https://appshunter.io/developer/1885421855)
- Category: Utilities, Productivity
- Price: $0.99
- Age rating: 4+
- Requires: iOS 27.1 · 2 MB
- Languages: American English
- Released: 2026-11-10
- Data updated: 2026-11-13

## What is Protractor Fold?

Protractor Fold uses the hinge of iPhone Duo as a protractor. It reads the hinge sensor live and shows angles to a thousandth of a degree.

INSIDE CORNERS
Room corners, cabinets and window bays, read on the inner screen.

OUTSIDE CORNERS
Box edges, walls and beams, read on the outer screen.

PIPES AND CURVES
Radius, diameter and curvature of pipes, arches and curved walls.

TARGETS
Set an angle or radius with a tolerance. A tone sounds on target, and each saved reading keeps how far off it was.

LOGS
Save readings with notes and photos, keep them in named logs, and export them as a spreadsheet or PDF.

ALSO
- Five color themes and a night mode
- No account, no ads, no tracking. Anonymous crash reports are sent only if you agree.

Requires iPhone Duo.

## Is Protractor Fold safe?

Not enough ratings yet to assess Protractor Fold.

## Is Protractor Fold legit?

Protractor Fold has limited verification signals. The AppsHunter Legitimacy Score for Protractor Fold is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.0 — 2026-11-10

No release notes.

## More apps by BRANDON ALAN INKEL

- [Nigh: Prep & Departure Planner](https://appshunter.io/ios/app/nigh-prep-and-departure-planner/id6761758206)

All apps by BRANDON ALAN INKEL: https://appshunter.io/developer/1885421855

---

*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 2026-11-13.*