1Level: Surface & Wall Level

Level anything — a shelf, a table, a washing machine, a picture on the wall — with a level that's fast, accurate and actually fun to use. AUTO SURFACE ↔ WALL Lay your iPhone flat and you get a big bubble level. Press it against a wall or stand it on top of a picture frame and 1Level switches to a wall level by itself. The display locks to the edge you started on, so it never flips while you nudge a frame into place. KNOW WHEN IT'S LEVEL — WITHOUT LOOKING • Screen: the edges glow green and flash the moment you hit level • Sound: a bright chime • Buzz: a crisp haptic tap • Audio guide: parking-sensor beeps that speed up as you get close, then a steady tone when you're dead level — perfect when the phone is above your head • Haptic detents: feel a click every degree as you adjust Each one can be switched on or off with a single tap. CALIBRATION THAT JUST WORKS Put the phone down on a flat surface — screen up or face down. It feels itself settle, counts down beep · beep · beep, and chimes "Level set". Pro mode uses the carpenter's reversal trick (measure, turn 180°, measure again) so it calibrates correctly even on a table that isn't level, and tells you how far off the table is. FIVE INSTRUMENTS • Surface — a liquid bubble vial with real physics • Wall — a spirit-level tube with a laser line showing true horizontal • Plumb — a swinging plumb bob for posts and door frames, plus wall lean • Angle — a protractor with targets for 15°, 22.5°, 30°, 45°, 60° and 90° • Auto — picks Surface or Wall for you PLAIN-ENGLISH DIRECTIONS Not just a number: "Right side is high · lower it", "Top leans left", "Bottom high 0.2°". BUILT FOR REAL WORK • Readings in degrees, percent, inches per foot (to 1/16″) and mm/m — all at once • Adjustable tolerance from ±0.1° to ±1° • HOLD freezes a reading; ZERO HERE measures relative to any existing slope • Rock-steady when still, instant when moving • Sunlight theme for working outdoors, plus Neon and Brass • Screen stays on while you work • Works on iPhone and iPad NO ADS. NO TRACKING. NO INTERNET. 1Level asks for no permissions, collects nothing and never connects to the internet.