Perfect Level

Perfect Level turns your phone into a complete measuring toolbox: a precision bubble level, a laser level line, a calibrated on-screen ruler and an angle meter — all in one app. Hanging a picture frame, mounting a TV, putting up shelves, laying tiles, levelling a washing machine or checking a surface on a DIY job? Perfect Level gives you an accurate reading in seconds. ★ BUBBLE LEVEL (SPIRIT LEVEL) • Classic bubble level with a live, smooth readout driven by your phone's gravity sensor • Lay the phone flat, or hold any of its 4 sides against an object to test for level or plumb • One-tap calibration saves a stable offset, so every later reading stays true • Switch between degrees (°) and percent slope (100% slope = 45°) • Optional leveling sound tells you the moment every bubble is centred — keep your eyes on the work, not the screen • Keep screen on, so the display never sleeps mid-measurement ★ LASER LEVEL • Projects a bright reference line using your device flashlight — for alignment in dark corners, cupboards and crawl spaces • Freeze a reading to lock it in place while you mark the wall ★ RULER & MEASURING TOOL • Calibrated on-screen ruler: drag between two points to measure length • Centimetres and inches, switch at any time • Measurement modes: normal, length, sides and area • Scale calibration matches the ruler to your exact screen • Copy a measurement to the clipboard, or save it straight into Notes ★ NOTES & TASKS • Save measurements, job notes and to-do items inside the app • Keep every reading from a project together instead of scribbling on paper ★ BUILT TO BE USED, NOT UNLOCKED • Every measurement tool is free — no feature is locked behind a paywall • An optional one-time purchase simply removes ads for an uninterrupted workspace • Works fully offline — no internet connection needed to measure • Clean themes and multi-language support PERFECT FOR Hanging pictures, shelves and mirrors • mounting TVs • tiling and flooring • levelling appliances and furniture • carpentry and woodworking • measuring angles, slope, tilt and inclination • masonry and brickwork • caravan and camping levelling • any home improvement or DIY project A NOTE ON ACCURACY Perfect Level reads your device's built-in gravity and accelerometer sensors. Sensor quality varies between phone models, so calibrate on a known flat surface before precision work. The on-screen ruler is limited by your screen size — it is a calibrated ruler, not a camera distance measurement. PERMISSIONS Camera access is used only to switch the flashlight on for the laser level. Perfect Level takes no photos and records no video. Carry a spirit level, laser level, protractor, clinometer and ruler in your pocket — download Perfect Level.