20 Best Ruler iOS Apps

1) Ruler

With a single touch your iPhone turns into a top accurate ruler.Over 1,000,000 of people downloaded the Ruler and find it usefulHow does it work?You can measure any object by simply placing it on the device screen or just next to it. By moving each line limiter one after another you can get the most accurate measurement. Feel like measuring in centimeters? No problem Just switch from inches to centimeters on the information screen. Ruler saves your latest measurement and you can get back to it anytime. (Free)By DAVA Consulting via

2) Ruler 2

A ruler is a simple tool modest yet necessary, needed by everybody now and then.Ruler is the ruler reinvented for a world where we all want to use less to do more, wherever, whenever.While conventional rulers involve mentally discerning measurements from small markings, using Ruler is just a matter of dragging the pointer: Precise, fully formatted measurements appear instantly. It makes wooden rulers feel so analog.INCLUDES:Pointer with digital readout. Line it up & get a precise measurement, instantly. Displays fractions for inches, decimals for centimeters.Extending action. Just swipe. Measuring tape without the bulge in your pocket.Visual "How To" for measuring ... ($0.99)By Andrew Kaz & Phill Ryu via

3) ruler - precise and powerful photo ruler

Through the App is easy to find any user interface elements of the region, location and size, magnifying glass magnification times, any pixel will be at a glanceYou can be QA quality assurance engineers, art workers, APP screenshots production staff, of course, can meet the daily needs of the people. You can quickly review the size of the mobile App user interface with points and pixels in a moment.Use only with three steps:The first step: the scene will be interested in shooting automatically saved in the album, of course, you can select any photo from the album.Step 2: After opening ... (Free)By wl zhou via

4) Ruler - Accurate Ruler

You may already noticed that most of ruler apps are actually wrong.Accurate Ruler renders according to screen width spec of the device that your are currently using. So It is accurate. Already tested in following devices including: iPhone 4iPhone 4siPhone 5iPhone 5siPhone 5ciPhone 6iPhone 6 plusiPhone 6siPhone 6s plusiPhone seiPhone 7iPhone 7 plusiPad 2iPad 3iPad 4iPad airiPad air 2iPad miniiPad min 2iPad min 3iPad mini 4iPad pro, iPod Touch 5/6 If your device is one of them, we insure it is accurate. (Free)By Xiangyi Liu via

5) Ruler - Ruler Measurement

1. Ruler: Measuring the length of the object, very precise, both metric and imperial units.2. Noise meter: detect the surrounding sound decibel by mobile phone3. Protractor: Measure the precise angle of the object by turning on the camera.4. Level: Place the phone or iPad on the object to be tested to see if it is level.5. Hanging correction: measure the precise angle of the object by turning on the camera.6. Compass: Quickly and accurately locate the gadget, no longer lost.7. Mirror: Illuminate your handsome and beautiful (0.99)By zengguang shen via

6) Gauge Ruler - knitting gauge ruler

Measure your knitting gauge anywhereChoose your ruler length - in both inches or cm.Measure stitches and rows.Calculate your per inch/cm gauge. ($0.99)By ShhStudios via

7) Luban Ruler - Lucky Ruler

LuBan Ruler is the first ever completed and applied set of rulers, which was coordinatedly researched and developed by Master Tam Nguyen and the Eastern Culture Research and Development Institute. The set is combined with 3 rulers, which are used for measuring and calculating the span/gap in items in constructions, ideally for applying fengshui to bring in money and blessing for the occupants.The app is designed to run perfectly on mobile phones and tablets using iOS from 9.0LuBan Ruler is ideal for those that are experts, practitioners, researchers in fengshui, as well as architects and carpenters to indicate the appropriate ... (Free)By Xuan Phuong Pham via

8) Ruler HD - Accurate Ruler

Ruler is a super practical exquisite length measurement tool, anytime you anywhere you want, lightweight and convenient, you deserve it. Features1. provide two kinds of fine skin style for your selection2. Provide in inches, centimeters units3. According to your use of a key to switch the screen up and down4. Perfect for a variety of mobile phone screen (0.990)By Amber Mobile Limited via

9) Ruler - A simple AR ruler app

A simple AR ruler for length and area measurements. (Free)By Play, Inc. via

10) Golden ruler – Ruler Toolkit, Mirror, QR scanner

Special designed Only for youImperial exclusive, noble temperament, luxury, all in gold rulerYour best choiceIncluding ruler and protractor. And also mirrorflashlight, and QR code scanning tools, all assembling into one appFeatures:- Highly Precise- Measure fixed position- Remember measure and settings- Change from centimeter to inch or from angle to radian- flashlight- Mirror- QR code scanningWe bring you the most beautiful app, we will continually updating. ($0.99)By tiger app via

11) 1m Ruler Special - Halloween Ruler

Special Halloween version to our fansCan`t find a ruler when you suddenly needs it?The object is longer than your phone?Fear not, 1m Ruler is here to help you out70% Off Get it now Just for a limited TimeThe Longest ruler on iPhone we`ve seen so farYou can now measure out of the PhoneIt`s acccurate measurement on demandGet Pro version for iAd Free and Frog Theme INCLUDED todayHow to use:1. Drag the ruler out of the phone to extend it.2. Move your phone alongside your measurement while extending.3. Lock your ruler before moving to prevent it from scrolling back in.4. Extend ... (Free)By Chicken Innovations via

12) Screen Ruler - A Desktop Ruler

Screen Ruler is an app that lets you measure everything on your minitor.It allows you create multiple rulers on your screen. It is incredibly useful such as web design, computer graphics and desktop publishing.Key features: Multiple ruler creation Measuring distance between 2 points Support Keyboard to use Arrows or 'W','A','S','D' Keys to move , Delete Key to remove ruler Support Mouse Wheel to change the background opacity of ruler Easy to use, simple and fast in horizontal or vertical measuring Rulers without shadow Auto detect screen change to update unit scale Floating on top of the screen Customizable color and ... (1.990)By Chun Sum Yu via

13) Screen Ruler - Pixel Perfect Screenshot Ruler

CONGRATULATIONS YOU HAVE FOUND MOST ADVANCE SCREENSHOT RULER APP.As an iOS developer, I always feel the lack of simple app to check position of objects/elements in any picture or screenshot. Now it's very easy to find position and size of any UI element, specifically x/y position and width/height/size.This app is specially designed for making Mobile Quality Assurance Engineer (QA Engg.) life much easier. Now they can quickly review Mobile UI with point & pixel perfect dimensions within minutes.HOW IT WORKS:Step1: Take Screenshot of the app to debug it. This will automatically be saved to your Camera Roll -> Screenshots album.Step2: ... (Free)By InfoEnum Software Systems via

14) Ruler - A Screen Ruler For You

Ruler is an accurate length measuring tool. By measuring the size of your monitor, you create one or more screen rulers on the screen that are the same as a real ruler, so that you can measure length without having a real ruler. Support for generating one or more rulers - Horizontal ruler - Vertical ruler Unit of measurement - Centimeter (cm) - Inch (in) - Pixel (px) Keyboard shortcut movement - Move up - Move down - Move left - Move right Display - Horizontal length - Vertical length - Diagonal length Transparency (01) (0.990)By Kun Mao via

15) EZ Ruler(尺子)

EZ RulerEZ CarpenteriPhoneeWhenever you need to measure the length without a ruler, EZ Ruler can help you. You can measure the object length in centimeter or inches. As one of the tools in EZ Carpenter, now you always bring a ruler with you as in your iPhone. ($0.99)By ez4phone lnc. via

16) Dual Ruler an accurate scale ruler to measure and convert with measurement notepad

($0.99)By DUAL MEDIA COMMUNICATION via

17) B.M

Take your iOS Device to the next dimension with Beyond Measure. It features a 3D screen ruler. Measuring objects with a 3D screen ruler is much easier. You need red/cyan 3D glasses for the 3D experience. The app also includes 5 Rulers including a Carbon Ruler, 5 Screen Rulers including the 3D Screen Ruler and a Protractor. There is also a Converter that can convert from both Degrees and Radians. The ruler is 30 CM / 12 Inches long and makes use of the full screen. A short help guide is included making sure you get the most out of ... ($0.99)By Vyasa via

18) Smart Ruler Pro.

Use your iPhone as a rulerYes, the ordinary ruler we had been all taking to geometry classes. Indeed, there are instances when you need to quickly measure something and the ruler is not always at hand. This problem has been solved if your iPhone has "Ruler" application installed.How does it work?Put an object on the screen of your iPhone or next to your device to measure how many centimeters or inches it has. By moving each line limiter, you will get the most accurate measurement because this application has clearly-defined limiters.With "Ruler" application, you can be sure that your measurements ... (Free)By Green Liston via

19) Free Pocket Ruler

Pocket ruler is a scrollable ruler that allows you to measure items that are longer than your iPhone/iPod.Other scrollable rulers allow you to scroll through the ruler but are useless for measuring anything longer than your device because the start of the ruler disappears off the screen as soon as you start to scroll meaning you have no point from which to start your measurement. Pocket ruler overcomes this by using a simple but effective system of stationary and scrolling points which allows you to keep an onscreen reference to the starting point.You can now change the ruler colour or ... (Free)By PongoSoft via

20) xRuler

Screen Pixel Ruler xRuler is a tiny screen pixel ruler for your Mac.Features:Horizontal ruler & Vertical rulerShow pixel pointLaunch at LoginSupport:hewbo.marketgmail.com (1.990)By LI JIANYU via