# Life-Size Ruler — Smartphone as a Ruler > Smartphone application that functions as a digital ruler for measuring lengths. (iPhone/iPad app by Jumpei Adachi.) - Source: https://appshunter.io/ios/app/life-size-ruler/id6503698542 (this page in markdown: same URL + `.md`) - Developer: [Jumpei Adachi](https://appshunter.io/developer/1516414955) - Category: Utilities, Lifestyle - Price: Free with in-app purchases - Rating: 3.70/5 from 3 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 3 MB - Languages: American English, Latin American Spanish, Italian, Korean, German (Germany), Brazilian Portuguese, Chinese (Traditional, Hong Kong SAR China), Chinese (Simplified, China), French (France), Japanese - Released: 2024-06-03 - Data updated: 2026-08-23 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/life-size-ruler/id6503698542/reviews.md ## What is Life? This app turns your smartphone into a ruler. ## Key features - Smartphone as a ruler - Measure lengths - Measure distances - On-screen measurement ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | 6-Inch Ruler | $0.99 | one-time | | 4-Inch Ruler | $0.99 | one-time | | 8-Inch Ruler | $0.99 | one-time | | 10-Inch Ruler | $0.99 | one-time | | 30 cm Ruler | $0.99 | one-time | | 20 cm Ruler | $0.99 | one-time | | 12 cm Ruler | $0.99 | one-time | | 15 cm Ruler | $0.99 | one-time | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/life-size-ruler/id6503698542/reviews.md ### 4/5 — Good app *2026-06-16* Good app. Need option to lock ruler on screen and save the last screen view (No ruler default - 4 inch) ## Frequently asked questions about Life ### What is Life-Size Ruler? Life-Size Ruler is a utility application that transforms your smartphone into a functional ruler, allowing you to measure lengths and distances directly on your device's screen. ### What devices does Life-Size Ruler support? Life-Size Ruler is available for iPhone and iPad devices. ### What is the age rating for Life-Size Ruler? Life-Size Ruler has an age rating of 4+, making it suitable for a wide range of users. ### How accurate is Life-Size Ruler? The accuracy of Life-Size Ruler depends on the device's screen calibration and the user's ability to align the on-screen ruler. It is best suited for quick estimations rather than precision engineering. ### Does Life-Size Ruler have ads? No, Life-Size Ruler does not contain advertisements, providing an uninterrupted user experience. ### What is the update frequency for Life-Size Ruler? Life-Size Ruler was last updated on April 22, 2026, with version 1.14. The developer may release updates periodically to improve functionality and compatibility. ### How does Life-Size Ruler compare to a physical ruler? Life-Size Ruler offers the convenience of having a measuring tool always available on your phone. However, a physical ruler may offer higher precision for critical measurements. ### What are the in-app purchases for Life-Size Ruler? While the app is free to download and use, there are in-app purchases available, likely for enhanced features or customization options. ## Version history (last 5 releases) ### 1.18 — 2026-07-31 You can now open the app from a Control Center control. ### 1.17 — 2026-07-18 The app now restores your previous state when you reopen it. ### 1.16 — 2026-07-16 이제 자가 화면 가장자리에 스냅됩니다. ### 1.15 — 2026-07-15 - 이제 자의 길이를 변경할 수 있습니다. - 길이 조절을 활성화하는 설정이 설정 앱으로 이동했습니다. ### 1.14 — 2026-04-22 All features are now available for free. ## Apps similar to Life | App | Rating | Price | Category | | --- | --- | --- | --- | | [Tape Measure & Ruler Арр](https://appshunter.io/ios/app/tape-measure-and-ruler/id1453537222) | 4.2 (4,291) | Free | Utilities | | [Tape Measure+ AR Digital Ruler](https://appshunter.io/ios/app/tape-measure-plus-ar-digital-ruler/id1667165565) | 4.4 (931) | Free | Utilities | | [Ruler / Measuring Tape](https://appshunter.io/ios/app/ruler-measuring-tape/id1262452961) | 4.4 (219) | Free | Utilities | | [Ruler®](https://appshunter.io/ios/app/ruler/id623207505) | 4.3 (35,090) | Free | Utilities | | [MyMeter: Tape Measure App](https://appshunter.io/ios/app/mymeter-tape-measure-app/id6744528187) | 4.3 (25) | Free | Utilities | | [Smart View : Screen Cast](https://appshunter.io/ios/app/smart-view-screen-cast/id6459018271) | 4.0 (1,375) | Free | Utilities | ## More apps by Jumpei Adachi - [Rhythm Learning](https://appshunter.io/ios/app/rhythm-learning/id1516415316) - [Soroban Training](https://appshunter.io/ios/app/soroban-training/id1519658576) - [和音音感トレーニング](https://appshunter.io/ios/app/id1524747495) - [リスニング暗算](https://appshunter.io/ios/app/id1530310167) - [Piano Chord Memorization](https://appshunter.io/ios/app/piano-chord-memorization/id1591588836) - [IPA Ruby](https://appshunter.io/ios/app/ipa-ruby/id1600197514) All apps by Jumpei Adachi: https://appshunter.io/developer/1516414955 ## Related topics [jumpei adachi](https://appshunter.io/ios/topics/jumpei-adachi) · [ruler app free sizing](https://appshunter.io/ios/topics/ruler-app-free-sizing) · [ruler app free](https://appshunter.io/ios/topics/ruler-app-free) · [ruler me](https://appshunter.io/ios/topics/ruler-me) · [height ruler](https://appshunter.io/ios/topics/height-ruler) · [ruler app free image](https://appshunter.io/ios/topics/ruler-app-free-image) --- *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 2026-08-23.*