4Pro Level Tools
Every way to check level, in one app
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Stop carrying a physical spirit level. 4Pro Level Tools turns your phone into a precision leveling instrument with four dedicated modes, each built for a different job. BUBBLE MODE: the classic torpedo-level look. A dual-tube gauge reads both tilt axes at once, with a real-time percentage readout. CIRCULAR MODE: a bullseye-style dial for surfaces that need to sit flat in every direction, tabletops, tripods, camera rigs, appliances. PLUMB MODE: check any wall, door frame, or vertical surface the way a real plumb bob does. PILLAR MODE: purpose-built for checking columns and posts for true vertical lean, with a live readout.