Ruler And Level Tools is a free utility application designed for Android devices, combining two essential tools: a Screen Ruler and a Bubble Level. The Screen Ruler allows users to measure objects directly on their screens, accommodating the dimensions of various items by using a caliper mode. Users can easily align the line limiters with the object's boundaries to obtain accurate measurements, which are displayed in real-time. The Bubble Level, also known as a Spirit Level, assists in ensuring objects are perfectly aligned and is particularly useful for construction, carpentry, and home decoration tasks.

The application is user-friendly, featuring horizontal and vertical spirit levels, multi-touch capabilities for precise measurement, and options for both Imperial and Metric units. It also includes a calibration feature to enhance measurement accuracy. Additional features such as adjustable ruler thickness, day/night mode, and sound settings contribute to a customizable user experience. While the app is free, it contains advertisements, which can be removed through a paid option.