Rul3r is a versatile and handy app designed to provide you with a portable ruler and a wide range of measurement tools right on your iPhone. With Rul3r, you no longer have to worry about not having a physical ruler at hand when you need to measure something accurately.

In addition to its ruler feature, Rul3r offers a variety of other useful tools. The app includes a protractor, allowing you to measure angles with precision. It also provides a plumb line, which helps you determine vertical alignment. The spirit level feature ensures that you can easily gauge whether a surface is level or not.

Rul3r goes beyond simple measurement tools by offering additional features such as an elevation, air pressure, and location meter. This allows you to gather data about your surroundings and environment. Furthermore, the app includes a decibel meter, enabling you to measure sound levels accurately. Lastly, Rul3r even offers an ordinal date converter, making it easy for you to convert dates into their corresponding ordinal format.

With its comprehensive set of measurement tools, Rul3r is an invaluable app for anyone in need of precise measurements. Whether you're a professional or simply someone who frequently needs to measure things, Rul3r is the perfect companion for your iPhone.