Bubble level (Spirit Level)

A spirit level app transforms your phone into a professional-grade leveling instrument for construction, carpentry, masonry, and home improvement projects. Whether you're a tradesperson, contractor, or DIY enthusiast, Bubble level (Spirit Level) delivers the accuracy and versatility you need on every job site.

Use your phone's four sides to test any surface for level or plumb—hold it against walls, shelves, picture frames, or lay it flat for a complete 360° level check. The app's independent calibration feature lets you fine-tune each side separately, ensuring precision in any orientation. Calibrate relatively against another object's surface or absolutely using Earth's gravity for true measurements.

Visualize your results in multiple formats: degree angles, inclination percentages, roof pitch, or inches per foot (:12) notation. The built-in inclinometer and visual clinometer provide professional-level measurements for complex angles and slopes. For hands-free operation, sound effects guide you through calibration without looking at the screen—essential when working in tight spaces or at height.

Designed for efficiency, Bubble level (Spirit Level) supports SD card installation to preserve phone storage and includes orientation locking to keep your readings stable while working. Its intuitive interface makes it accessible to beginners while delivering the precision that professional builders and contractors demand.

Whether you're hanging drywall, laying tile, checking foundation level, or tackling any construction task, this spirit level app eliminates guesswork and delivers reliable results every time.