Turn your smartphone into a precise bubble level using the built-in accelerometer sensor. Whether you're hanging a picture, leveling a shelf, or checking a surface — Bubble Level gives you an accurate, easy-to-read spirit level right in your pocket.

★ SURFACE MODE
Place your phone flat on any surface. A 2D bubble shows tilt in all directions with precision guides and crosshairs. See exactly how far off level you are.

★ EDGE MODE
Stand your phone on its edge against a wall, frame, or any vertical surface. A horizontal bar shows precise left-right tilt alignment — perfect for hanging pictures and mirrors.

★ REAL-TIME ANGLE DISPLAY
Large, easy-to-read degree readout updates instantly. Color-coded feedback: green when level, yellow when close, red when tilted.

★ COLOR FILL VISUALIZATION
Full-screen color fill rotates with your device, making it easy to see tilt direction even from a distance. Great for hands-free positioning.

★ HAPTIC FEEDBACK
Feel a gentle vibration when the surface is perfectly level. No need to watch the screen — just feel when it's right.

★ LOCK & CALIBRATE
Lock the current reading to compare later. Calibrate the sensor to zero on any surface for precise relative measurements.

★ PORTRAIT & LANDSCAPE
Works in both orientations. The layout adapts automatically with correct axis mapping for accurate readings in any position.

★ DARK & LIGHT THEMES
Choose your preferred theme or let the app follow your system settings.

★ MULTI-LANGUAGE
Available in English, Russian, and Ukrainian.

Perfect for:
• Home improvement — hang pictures, shelves, and mirrors straight
• Construction — quick level checks on the job site
• Photography — level your camera or tripod for aligned horizons
• DIY projects — check furniture, appliances, and surfaces

No internet connection required for the level functionality. Simple, fast, and accurate.