Ruler | A Curious Tool at App Store analyse

App power index: 100 (based on ranks around App Stores today)
Utilities Productivity
Developer: Curious Hat
Price: 0 free
Current version: 1.0, last update: 7 years ago
First release : 13 Jul 2014
App size: 7.04 Mb
4.2 ( 992 ratings )
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Estimation application downloads and cost

> 2.2k
Monthly downloads
~ $ 900
Estimation App Cost


Measure and compare objects around you!

With Ruler, users can explore and measure objects around them and learn about sizes, units of measure, and proportions.

* Simply pick a known reference object in Ruler, like a coin or a sheet of paper, then select an object you’d like to measure.
* Place these objects side-by-side and take a picture.
* Ruler provides sliders to measure the objects and compares their relative sizes.
* Switch between the US and Metric measurement system.

36 Reference objects to choose from including:
- US and World coins and paper bills
- iPhone and iPad
- Credit Card
- Crayon
- Lego and Duplo bricks
- CD/DVD
- US and A4 paper sheets
- soccer, tennis, basket, baseball, golf, football balls
- soda can

Note for parents and educators:
The app shows iAds.
If you want an ad free version of this app, please download Curious Ruler
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Available in countries
Country Price
Canada free
China free
France free
Germany free
Italy free
Netherlands free
Portugal free
Spain free
Poland free
UK free
India free
Japan free
Poland free
Russia free
Turkey free
USA free
Korea, Republic Of free
Ukraine free
Available for devices
iPhone3GS, iPhone4, iPodTouchFourthGen, iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74, iPhone8, iPhone8Plus, iPhoneX,