# Ruler Pro - Measure Tools > Digital ruler, tape measure, and camera measurement tool for mobile devices. (iPhone/iPad app by Tue Nguyen Minh.) - Source: https://appshunter.io/ios/app/ruler-pro-measure-tools/id1167318396 (this page in markdown: same URL + `.md`) - Developer: [Tue Nguyen Minh](https://appshunter.io/developer/434811167) - Category: Utilities, Productivity - Price: $1.99 - Rating: 4.56/5 from 1,133 App Store ratings · 26 written reviews indexed - Age rating: 4+ - Requires: iOS 10.3 · 34 MB - Languages: English - Released: 2016-10-23 - Data updated: 2026-06-10 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/ruler-pro-measure-tools/id1167318396/reviews.md ## What is Ruler Pro? The most completed ruler solutions for your phone! It includes a classic ruler, a tape measure and a camera ruler. Enjoy pro version features: - 8m/25ft tape measure - No ads included Features: - Elegant design - Measure in inches and centimeters - Sliders to measure small objects accurately - Camera ruler mode to measures objects using your camera - Photo measures mode to add measures data to your photos. ## Key features - Classic ruler - Tape measure (up to 8m/25ft) - Camera ruler mode - Photo measures mode - Measure in inches and centimeters - Sliders for accurate small object measurement ## What do users think of Ruler Pro? Overall sentiment: negative **Pros** - 🚀 Accurate measurements - 👍 Useful for small items - 👍 Flexible reference options **Cons** - 🐛 Inaccurate measurements on certain devices - 🤔 Confusing instructions and settings - 💰 Paid version not worth the cost **Commonly reported bugs** - Settings button not working - Ruler display not matching actual measurements **Most requested features** - More intuitive user interface - Ability to use custom reference objects - Improved accuracy across all devices ## Recent user reviews (10 of 26) All indexed reviews: https://appshunter.io/ios/app/ruler-pro-measure-tools/id1167318396/reviews.md ### 1/5 — Doesn’t have the right measure in iPhone XR at least *2022-07-01, version 1.5.9* Very bad it doesn’t have the right measure. ### 5/5 — This is so good to have *2021-02-25, version 1.5.9* I can never find a ruler when I need one, so having this app to estimate the size of jewelry components is truly golden. ### 5/5 — Measure Small, Measure Accurately *2020-11-02, version 1.5.9* Relative reference with reference options. This little app is quite accurate and constructively flexible, especially when accuracy is desired for your smaller items. Whether measuring for accurate fit or just comparing the size of “pocket items“, this ruler will do the trick and save your results in contrasting colors to your photos. ### 1/5 — Not accurate *2020-07-30, version 1.5.9* Ruler is not accurate on iPad mini 5. Measurements are shorter than actual ruler. ### 1/5 — Not easy to use *2020-05-24, version 1.5.9* Very hard to work with and the instructions make no sense to me. Makes this a useless app. ### 2/5 — Super lame *2020-04-18, version 1.5.9* Don’t waste your money, even two dollars it’s too much. ### 1/5 — Need a quarter *2020-04-12, version 1.5.8* You need a quarter as a reference object in order to measure something, which is not helpful. Very disappointed that I paid for this. ### 2/5 — Scammy *2020-03-25, version 1.5.8* Was fooled by the “free” version. Just be honest next time. ### 1/5 — Sorry but... *2020-02-27, version 1.5.8* I cannot figure out how to use this app. Tape measure is fine until your finger hits the end. How do you go past that? If you lift your finger to move back away from tape to continue at the other end the tape jars. I have no idea what is meant by a quarter reference how do you do that. Help ### 1/5 — Ruler Pro is 33% off! *2020-02-19, version 1.5.8* I paid for Ruler Pro to avoid the ads cut the Pro version shows something 3 inches long to be 2 inches long. The worst part is that when I tried to contact the developer the link was a dead link. The free version is accurate but the paid version looks like the ruler is stretched. ## Frequently asked questions about Ruler Pro ### What does Ruler Pro - Measure Tools do? This app offers a suite of measurement tools for your phone. It includes a traditional ruler, a tape measure with a range of up to 8 meters (25 feet), and a unique camera ruler that utilizes your device's camera for measurements. It also allows you to add measurement data to your photos. ### What are the key features of Ruler Pro - Measure Tools? Key features include a classic ruler, an extended tape measure (8m/25ft), a camera ruler mode for measuring objects via your camera, and a photo measures mode to annotate images with measurements. It supports both inches and centimeters and includes sliders for precise measurement of small items. ### Is Ruler Pro - Measure Tools free to use? The app offers a free version with basic ruler functionality. A pro version is available which removes ads and unlocks the full 8m/25ft tape measure feature, suggesting a freemium model. ### What devices is Ruler Pro - Measure Tools compatible with? While specific OS versions are not detailed, the app is designed for mobile phones, indicating compatibility with both Android and iOS devices that support its features, particularly the camera functionality for the camera ruler. ### How can I use the camera ruler feature? The camera ruler mode allows you to measure objects by pointing your phone's camera at them. The app uses your camera feed to help you determine the dimensions of the object you are focusing on, making it a versatile tool for on-the-go measurements. ## Version history (last 1 release) ### 1.5.9 — 2020-04-17 Minor bug fixes ## Apps similar to Ruler Pro | App | Rating | Price | Category | | --- | --- | --- | --- | | [Gen Max 4D](https://appshunter.io/ios/app/gen-max-4d/id1517948574) | 2.3 (3) | Free | Utilities | | [Glass Sounds](https://appshunter.io/ios/app/glass-sounds/id1452749766) | 4.7 (18) | Free | Utilities | | [ANCEL BT500](https://appshunter.io/ios/app/ancel-bt500/id1507325225) | 3.0 (2) | Free | Utilities | | [Calculator Plus - PRO](https://appshunter.io/ios/app/calculator-plus-pro/id978091416) | 4.9 (696) | $3.99 | Utilities | | [MOMENTO®](https://appshunter.io/ios/app/momento/id1485796812) | 4.7 (10) | Free | Utilities | | [Daily Data Tracker](https://appshunter.io/ios/app/daily-data-tracker/id372593989) | 3.9 (8) | 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) - [Ruler®](https://appshunter.io/ios/app/ruler/id623207505) All apps by Tue Nguyen Minh: https://appshunter.io/developer/434811167 --- *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 2026-06-10.*