Bubble Level & Clinometer

Bubble Level is a precision digital inclinometer, spirit level, and angle finder designed for craftsmen, builders, DIYers, and engineers.

Engineered with a clean, high-contrast industrial aesthetic, it delivers responsive, low-latency measurements in both Portrait and Landscape orientations.

Measurement Modes:


• Surface Level: dual-axis circular bullseye level displaying tilt, pitch, and roll readouts simultaneously.


• Edge Level: measures angles along any physical edge (top, bottom, left, right) with automatic detection and edge locking.


• Angle Mode: accurate inclinometer with support for absolute level and relative angle comparisons.

Core Features:


• Relative Zero: zero out any reference plane to measure relative slopes and angles effortlessly.


• Hold Function: freeze current readings on screen when working in awkward or tight spots.


• Acoustic & Haptic Guidance: audio beeps and vibration feedback trigger when hitting the target level within your defined tolerance.


• Multiple Engineering Units: Degrees (°), Grade (%), Pitch (in/ft), and Roof Slope (mm/m).


• Comprehensive Calibration Wizard:


– Instant single-tap zero point calibration.


– Two-step reversal calibration that automatically eliminates camera-bump bias.


– Edge-by-edge calibration for all four sides of the phone.


• Measurement History: save, review, and manage your angle measurements with timestamps.


• Private & Offline: works fully offline without requiring an internet connection or sensitive device permissions.