Plumb: Bubble Level & Angle

Plumb is a precise bubble level and angle finder that stays out of your way. Lay your phone on a surface for a 360° bullseye level, or stand it on an edge to check shelves, frames, door posts and walls. The reading is big enough to see from a ladder. WHY PLUMB • No pop-up ads. One small banner sits below the controls and never covers the level. • No permissions. No location, camera, microphone or storage access. No account. • Calibration that fixes what reviewers complain about: measure, turn the phone around, measure again. That cancels sensor offset, a camera bump and a thick case in about ten seconds. SURFACE MODE • Bullseye bubble with 1°, 5° and 10° rings and your tolerance zone • Total tilt in huge digits, plus separate left–right and top–bottom values • Ideal for tables, appliances, washing machines, tripods, pool tables and aquariums EDGE MODE • Stand the phone on any of its four edges: Plumb detects the edge and turns the vial and readout so they stay upright • Level and plumb checks for shelves, pictures, door frames, posts and tiles • Tells you which end is low HOLD, ZERO AND ALERTS • Hold freezes the reading so you can read it after pulling the phone out of a tight spot • Every held reading is kept with date and time, so you can note angles and look them up later • Zero makes the current angle the reference, for matching a slope or measuring relative to an existing surface • Optional beep and vibration the moment the reading is within your tolerance (±0.1°, ±0.25°, ±0.5° or ±1°) UNITS AND COMFORT • Degrees, percent slope or roof pitch (x/12) • Steady or fast response • Keeps the screen on while you measure • Dark, high-contrast design that works with large text • Available in 46 languages Tips for accuracy: calibrate once per mode on a firm spot, remove a wobbly case for edge checks, and keep the phone still for a second before reading. A phone is not a certified measuring instrument; for critical work, confirm with a calibrated level. Your settings, calibration and held readings stay on your phone.

First release: surface and edge level, big readout, two-step flip calibration, zero, hold with saved readings, and optional beep and vibration when level.