Ruler AR: Digital Tape Measure is a handy utility tool for iPhone that allows users to measure distance, height, width, length, and calculate area using their phone's camera. With features like Tape Measure, Ruler, Area Tool, Flashlight, Screenshots, Export to Excel, and support for both Imperial and Metric systems, this app provides a comprehensive solution for various measurement needs.

The app also offers a Premium subscription option with a 3-day free trial followed by a $4.99/year fee. This subscription includes benefits such as measurement saving, no measurement limits, ad-free experience, and the ability to export measurements to Excel. Users can manage their subscriptions and cancel auto-renewal easily through their account settings.