# Ruler® — + Photo Ruler & AR Measure

> Phone-based ruler, tape measure, and camera measurement tool with photo documentation. (iPhone/iPad app by Tue Nguyen Minh.)

- Source: https://appshunter.io/ios/app/ruler/id623207505 (this page in markdown: same URL + `.md`)
- Developer: [Tue Nguyen Minh](https://appshunter.io/developer/434811167)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.30/5 from 35,090 App Store ratings · 574 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 25 MB
- Languages: American English
- Released: 2013-03-28
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/ruler/id623207505/reviews.md

## What is Ruler®?

Your Comprehensive Ruler Solution for Your Phone!
Experience the ultimate ruler toolkit on your phone, featuring a classic ruler, a tape measure, and a camera ruler.

Key Features:
- Elegant Design: Enjoy a stylish and user-friendly interface for all your measurement needs.
- Dual Units: Easily switch between inches and centimeters for versatile measuring.
- Precision Sliders: Accurately measure small objects with intuitive sliders.
- Camera Ruler Mode: Utilize your phone's camera to measure objects seamlessly.
- Photo Measures Mode: Add measurement data directly to your photos for organized documentation.

Make every measurement a breeze with our complete ruler solution! Download now for a sleek and efficient measuring experience.

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

## Key features

- Classic ruler and tape measure
- Camera ruler mode
- Photo measures mode
- Dual unit support (inches/cm)
- Precision sliders for small objects
- Elegant and user-friendly interface

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Ruler Pro (Weekly) | $1.99 | per 7 days |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Features | $1.99 | one-time |


## What do users think of Ruler®?

Overall sentiment: negative

**Pros**

- 🚀 Accurate measurements
- 👍 Easy to use
- 🔍 Convenient for small items
- 📏 Useful ruler tool

**Cons**

- 💰 Paywall for basic features
- ⏱️ Limited free usage time
- 🔍 Inaccurate for larger objects
- 🙅‍♀️ Aggressive monetization tactics

**Commonly reported bugs**

- Inconsistent measurements
- Compatibility issues with newer devices

**Most requested features**

- Ability to switch between metric and imperial units without paying
- Improved accuracy for larger measurements
- Removal of time limits on free usage

## Recent user reviews (10 of 574)

All indexed reviews: https://appshunter.io/ios/app/ruler/id623207505/reviews.md

### 1/5 — Schrott

*2026-07-03*

Für iPhone konzipiert, Massangaben stimmen nicht, wenigsten kostenlos

### 1/5 — was good

*2026-06-29, version 3.8.5*

had it all this time then they removed the metric side unless you pay for it so now deleted

### 1/5 — was in cm asked for money for it to be changed into inches

*2026-06-15, version 3.8.5*

Like my title said they had it in cm and I couldn't change it to inches without paying. I even tried to see how many cm are in inches but it was really hard to tell. It's free and no ads but still🙄

### 1/5 — Costs money for inches

*2026-06-03, version 3.8.5*

Most basic app ever, charges money to measure in inches.

### 1/5 — PAY FOR INCHES?

*2026-04-25, version 3.8.5*

This dev wants you to pay for inches. He can take 12 inches right up his @$$

### 1/5 — ugh

*2026-04-20, version 3.8.5*

annoying that you have to upgrade to get the ruler in cms.

### 1/5 — Seriously Hot Garbage

*2026-04-16, version 3.8.5*

The app has very sharp and professional looking graphics, which is what made me think I should take a risk on buying the application. Unfortunately the reference object concept is completely unusable. If I want to get a measurement it has to be something small enough that you can drag lines around to mark a reference object. 

Really? Am I supposed to tape a quarter to the side of my garage and then try to zoom in enough to put the reference lines on the quarter?

I believe they are simply counting on the fact that you can't get a refund and even if you could wouldn't go through the hassle for $1.99. Don't bother.

### 2/5 — I agree with ReginaY

*2026-04-10, version 3.8.5*

I have used this handy ruler with inches on one side + centimeters on the other. Very handy! Now it only shows centimeters on both sides. If I still want inches I must pay a regular fee. Uh—no.  I need no special features; just a simple ruler. I’m deleting it.

### 1/5 — Inches only

*2026-04-04, version 3.8.5*

Immediately uninstalled after I realised the default mode is inches and you have to pay extra to get cm.

### 1/5 — No Inches

*2026-03-16, version 3.8.5*

You have to pay to upgrade to get inches and centimeters

## Frequently asked questions about Ruler®

### What does the Ruler® app do?

Ruler® offers a comprehensive suite of measurement tools for your phone. It includes a classic ruler, a tape measure, and an augmented reality camera ruler. You can also use the photo measures mode to add measurement data directly to your images for documentation.

### What are the key features of Ruler®?

Key features include a classic ruler, tape measure, and camera ruler mode for AR measurements. It supports dual units (inches and centimeters), offers precision sliders for accurate measurement of small objects, and allows you to add measurements to your photos.

### Is Ruler® free to use?

The app is free to download and use, offering a range of measurement functionalities. It does have in-app purchases, suggesting that some advanced features or customization options may require payment.

### What devices is Ruler® compatible with?

While specific compatibility details are not provided, the app is available on the Apple App Store, indicating it is designed for iOS devices. It utilizes the phone's camera for its AR features, so a functional camera is necessary.

### How can I use Ruler® for my projects?

You can use Ruler® for various tasks such as measuring furniture dimensions, checking if an object will fit in a space, or documenting measurements for DIY projects. The photo measures mode is particularly useful for keeping a visual record of your measurements.

## Version history (last 5 releases)

### 3.8.5 — 2026-01-02

Minor bug fixes

### 3.8.4 — 2025-12-24

Minor bug fixes

### 3.8.3 — 2025-10-26

Minor bug fixes

### 3.8.2 — 2025-10-08

Minor bug fixes

### 3.8.1 — 2025-03-21

Minor bug fixes

## Apps similar to Ruler®

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Tape Measure+ AR Digital Ruler](https://appshunter.io/ios/app/tape-measure-plus-ar-digital-ruler/id1667165565) | 4.4 (931) | Free | Utilities |
| [Measuring Tape+ Measure AR app](https://appshunter.io/ios/app/measuring-tape-plus-measure-ar-app/id6444381350) | 4.5 (2,022) | Free | Utilities |
| [Ruler AR - Measuring Tape Cam](https://appshunter.io/ios/app/ruler-ar-measuring-tape-cam/id1279285953) | 4.3 (3,493) | Free | Utilities |
| [Tape Measure & Ruler Арр](https://appshunter.io/ios/app/tape-measure-and-ruler/id1453537222) | 4.2 (4,291) | Free | Utilities |
| [The Tape Measure & 3D Scanner](https://appshunter.io/ios/app/the-tape-measure-and-3d-scanner/id1564249382) | 4.4 (3,887) | Free | Utilities |
| [Tape Measure™](https://appshunter.io/ios/app/tape-measure/id1271546805) | 4.4 (88,159) | Free | Utilities |

## More apps by Tue Nguyen Minh

- [Flower Board™](https://appshunter.io/ios/app/flower-board/id434811164)
- [Flower Board HD - A relaxing puzzle game](https://appshunter.io/ios/app/flower-board-hd-a-relaxing-puzzle-game/id450677428)
- [Toolbox™](https://appshunter.io/ios/app/toolbox/id615380696)
- [Bubble Level Plus+](https://appshunter.io/ios/app/bubble-level-plus-plus/id618064263)
- [Big Stopwatch™](https://appshunter.io/ios/app/big-stopwatch/id622509131)

All apps by Tue Nguyen Minh: https://appshunter.io/developer/434811167

## Related topics

[ruler photo](https://appshunter.io/ios/topics/ruler-photo) · [ruler millimeters](https://appshunter.io/ios/topics/ruler-millimeters) · [ruler app free metric](https://appshunter.io/ios/topics/ruler-app-free-metric) · [ruler app free photo](https://appshunter.io/ios/topics/ruler-app-free-photo) · [ruler app free image](https://appshunter.io/ios/topics/ruler-app-free-image) · [ruler app free sizing](https://appshunter.io/ios/topics/ruler-app-free-sizing) · [mm ruler photo](https://appshunter.io/ios/topics/mm-ruler-photo) · [metric ruler](https://appshunter.io/ios/topics/metric-ruler) · [cm scale](https://appshunter.io/ios/topics/cm-scale) · [vertical ruler](https://appshunter.io/ios/topics/vertical-ruler) · [flying ruler](https://appshunter.io/ios/topics/flying-ruler) · [ruler](https://appshunter.io/ios/topics/ruler) · [ruler image](https://appshunter.io/ios/topics/ruler-image) · [ruler pictures](https://appshunter.io/ios/topics/ruler-pictures) · [ruler fish](https://appshunter.io/ios/topics/ruler-fish) · [ruler app free inches](https://appshunter.io/ios/topics/ruler-app-free-inches) · [measuring app ruler](https://appshunter.io/ios/topics/measuring-app-ruler) · [inch ruler device size measure](https://appshunter.io/ios/topics/inch-ruler-device-size-measure) · [bpaas image ruler](https://appshunter.io/ios/topics/bpaas-image-ruler) · [virtual ruler](https://appshunter.io/ios/topics/virtual-ruler)

---

*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 2026-08-29.*