# Camera Protractor - Protractor + Rule can measure real life objects > Digital protractor and ruler app for measuring real-world objects with your iPhone camera. (iPhone/iPad app by Huafang Zhang.) - Source: https://appshunter.io/ios/app/camera-protractor-protractor-plus-rule-can-measure-real-life-objects/id614594487 (this page in markdown: same URL + `.md`) - Developer: [Huafang Zhang](https://appshunter.io/developer/586041482) - Category: Utilities - Price: Free - Rating: 3.83/5 from 6 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 5.0 · 8 MB - Languages: English, French, German, Italian, Japanese, Korean, Chinese, Chinese - Released: 2013-03-22 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/camera-protractor-protractor-plus-rule-can-measure-real-life-objects/id614594487/reviews.md ## What is Camera Protractor? Still buying protractor from station's shop? It's out of date! Take one with you all the time on your iPhone! Bring a protractor with you where ever you go with this handy app. Now you can measure precisely the lean of the Tower of Pisa! Objects of any size can be measured; match boxes, houses, pyramids... anything you can capture with your iPhone's camera. This one looks extremely pretty and never get rusted! Check it out! Also, you could change your device to a rule with this app. Key Features * Protractor can be moved to any place for your convenience. * It provides camera function to shoot a live picture and immediately measure a large size object. * Intuitive and elegant UI design * full screen. * Angle measurement. (0~180 deg) * Rule. * Perfectly E-mail support. * NO Ads. * Support iphone4, iphone4s, iphone5, iPod touch 4, iPod touch 5 * Support ios5.0, ios6.0 THIS IS A REAL TOOL. NOT A TOY. ================================================== Please contact us by: ipixeltech@gmail.com For any feedback or suggestion. ## Key features - Digital protractor and ruler - Measure real-life objects with camera - Precise angle measurement (0-180 degrees) - Intuitive UI design - Full screen display - Email support ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/camera-protractor-protractor-plus-rule-can-measure-real-life-objects/id614594487/reviews.md ### 5/5 — Wonderful ! *2016-07-27* As an architect I often have to make quick sketches for my clients. This is a wonderful tool for estimating ground slopes and grade heights. Recommend it highly. ### 1/5 — Kinda useful, but requests microphone *2015-03-01* It's kind of useful for some things, I used it for a math project. However the app requests to use the microphone, and seems to be recording something even when the camera feature is off (red banner at the top, like when on a Skype video call). I don't know why it needs to do that or why it needs to record audio. Big big privacy issue. ### 3/5 — it's just ok *2013-09-20* it's really frustrating that you can't rotate the app 180* when you try to use the camera the lens gets blocked by your hand holding the phone. please fix this! ### 5/5 — good *2013-06-17* good ### 4/5 — not bad *2013-06-17* it is not bad ### 5/5 — good *2013-06-17* like its camera measure function, i can measure anything anytime ## Frequently asked questions about Camera Protractor ### What can Camera Protractor measure? Camera Protractor can measure angles from 0 to 180 degrees and lengths of real-life objects. You can measure anything you can capture with your iPhone's camera, from small items like matchboxes to larger structures. ### Does Camera Protractor have ads? No, Camera Protractor is ad-free, as explicitly stated in its features. This ensures an uninterrupted user experience while measuring. ### What devices and iOS versions does Camera Protractor support? Camera Protractor supports iPhone and iPod touch devices, specifically mentioning iPhone 4, 4s, 5, iPod touch 4, and 5. It is compatible with iOS 5.0 and iOS 6.0. ### How does the camera function work in Camera Protractor? The app provides a camera function that allows you to shoot a live picture of an object. You can then immediately measure large objects directly from the captured image. ### Is Camera Protractor suitable for professional use? The app is described as a 'REAL TOOL. NOT A TOY.', suggesting it is intended for practical, precise measurements rather than casual use. However, its rating of 3.8 stars from 6 ratings indicates mixed user sentiment. ### How often is Camera Protractor updated? The last update for Camera Protractor was on June 14, 2013, with the latest version being 1.2. This suggests infrequent updates. ### Can I use Camera Protractor as a ruler? Yes, in addition to being a protractor, the app can also function as a rule, allowing you to measure lengths of objects. ### What is the age rating for Camera Protractor? Camera Protractor has an age rating of 4+, making it suitable for a wide range of users. ## Version history (last 2 releases) ### 1.2 — 2013-06-14 Improve UI. Fix Crash bug. Fix bug on iPhone5. Support New Language - Italian. Support New Language - French. Support New Language - German. Support New Language - Simplified Chinese. Support New Language - Korean. Support New Language - Japanese. Support New Language - Traditional Chinese. Support pause decibel at startup. Support clear graph by double-tap. All upgrades are totally free! Want us to keep the free updates coming soon? 5-star ratings and nice comments allow us to keep providing our existing users with new features. Did you know you can rate us again for each version? And if you need furthering assistant, please contact us by Email: ipixeltech@gmail.com. Thank you! ### 1.0 — 2013-03-22 No release notes. ## More apps by Huafang Zhang - [Fisheye Camera - Retro Lens](https://appshunter.io/ios/app/fisheye-camera-retro-lens/id586041479) - [Decibel Meter Plus Pro](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476) - [Decibel Meter Plus](https://appshunter.io/ios/app/decibel-meter-plus/id648142711) - [Fisheye Plus-Retro Photo Video](https://appshunter.io/ios/app/fisheye-plus-retro-photo-video/id659276619) - [Fisheye Plus Pro Camera](https://appshunter.io/ios/app/fisheye-plus-pro-camera/id949277360) All apps by Huafang Zhang: https://appshunter.io/developer/586041482 --- *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.*