# AR Protractor — Measure Angles，Distance，Volume

> Measure Angles，Distance，Volume (iPhone/iPad app by 晓强 江.)

- Source: https://appshunter.io/ios/app/ar-protractor/id6788215923 (this page in markdown: same URL + `.md`)
- Developer: [晓强 江](https://appshunter.io/developer/6775869180)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 2 MB
- Languages: American English
- Released: 2026-07-21
- Data updated: 2026-09-02
- User reviews in markdown: https://appshunter.io/ios/app/ar-protractor/id6788215923/reviews.md

## What is AR Protractor?

AR Protractor is a portable measurement tool built on augmented reality that turns your phone into a portable rangefinder, protractor and volume meter. No extra hardware is needed — just open the camera and aim at a flat surface to get accurate measurement results instantly.

## Main Features
• Rangefinder: Continuous single-point measurement with real-time display of segment length and total cumulative distance
• Protractor: Calculate arbitrary planar angles via three-point measurement
• Area Measurement: Two modes available — polygon and circle
• Volume Measurement: One-tap calculation for cuboids, cylinders and irregular solids (frustum method)
• Unit Conversion: Meters, centimeters, millimeters, feet, inches; cubic meters, liters, cubic feet, gallons
• Marker Size Adjustment: Customize the size of measurement markers to suit your usage habits

## Premium Features
Two unlocking options: yearly subscription (3-day free trial, cancel anytime, auto-renews yearly) or one-time purchase for permanent unlock. Unlock Angle Measurement, Area Measurement, and all volume features (Box / Cylinder), ad-free.

## Privacy & Support
We value your privacy. All AR measurement processing happens locally on your device, and none of your environmental data will be uploaded.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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



## Version history (last 3 releases)

### 1.2 — 2026-08-27

Fix known bugs.

### 1.1 — 2026-07-24

Fix known bugs.

### 1.0 — 2026-07-21

No release notes.

## More apps by 晓强 江

- [TrailMaster Outdoors](https://appshunter.io/ios/app/trailmaster-outdoors/id6777672263)
- [VisaCountdown](https://appshunter.io/ios/app/visacountdown/id6781561977)
- [FlashSOS for Outdoor Safety](https://appshunter.io/ios/app/flashsos-for-outdoor-safety/id6788298765)

All apps by 晓强 江: https://appshunter.io/developer/6775869180

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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 2026-09-02.*