Ruler is a free lifestyle app developed by Andrei Shpileuski for iPhone. With Ruler AR, you can measure height, length, square, angle, and more using your iPhone camera. This app utilizes Apple ARKit and augmented reality technology to provide you with the experience of a real tape measure.

Whether you need to measure an object or a surface, Ruler has the right tools for the job. You can simply point and shoot the camera towards an object to measure its dimensions. Alternatively, you can use the Air Mode, where you move the phone from point A to point B, mimicking the action of a traditional tape measure. The Surface Locked feature allows you to restrict measurements to surfaces like floors or walls.

Ruler offers a range of features to ensure accurate measurements. You can choose between plane detection or feature point focus, and measure in inches, meters, and centimeters. Sliders are available to measure small objects with precision, and you can save your measurements to the Camera Roll for future reference.

Please note that Ruler offers a Premium Membership subscription, priced at $1.99 per month or $0.99 per week, which provides access to premium functionality and removes ads. The subscription automatically renews at the end of each term, and payment is charged through your iTunes account. You can manage your subscription and turn off auto-renewal in your iTunes account settings.

Download Ruler now and have a convenient and accurate measuring tool right at your fingertips.