Spirit & Bubble Level: Angle

Best Practice Chicago

In-app purchases

About this app

Plumb Level is a precise digital spirit level for your phone - no bubble vial to squint at, no batteries to buy. Lay it on an edge, stand it against a stud, or hold it to a pipe, and read the angle to a tenth of a degree.

FOUR WAYS TO READ
- Linear tube level - targets horizontal, vertical, or 45 degrees; set Auto and it tracks whichever the phone is nearest.
- Bullseye level - a surface bubble that shows the high side of any flat plane.
- Plumb bob - a true hanging plumb for checking verticals.
- Torpedo - a go/no-go angle mode: set a target, then tilt to match with a rising haptic.

BUILT FOR THE JOB
- Auto-lock freezes the tracked axis so the reading cannot jump while you work.
- A heavy haptic snaps the instant you hit dead level - you feel it with gloves on.
- Near level, it shows the pitch in inches per foot, in the fraction you work in.
- Sensor-fused from the accelerometer and gyroscope for a steady, responsive bubble.
- Big, high-contrast readout and thick borders sized for gloved hands and bright sun.

SAVE AND SHARE
Save any reading with a snapshot of the vial to a time-stamped ledger, with notes and an optional jobsite location. Export your saved readings as a PDF or PNG ledger, or back them up to a .plumb file. Turn on Custom Branding to add your own business name, contact info, and logo to every export.

PRIVATE AND OFFLINE
Everything runs on the device. No account, no cloud, no network. Plumb Level collects no data - no tracking, no ads, no analytics. Your readings and snapshots leave the phone only when you share them yourself.

ONE-TIME PURCHASE
Pay once and the whole app is yours. No subscriptions, no in-app purchases, no ads, ever. English and Spanish throughout, including exports.

MORE FROM PLUMB
Want the feet-inch calculator, an AR tape measure, and a stud finder too? Plumb Pro puts every Plumb tool in one app, a tap away in Settings.

A note on accuracy: a phone-sensor level is a fast reference. For structural, code, or safety-critical work, confirm with a calibrated tool.

What’s new

Plumb Level is now free. The level, saving your readings and sharing stay free for good. Pro is an optional one-time unlock for branded PDF and PNG exports, your own branding, .plumb backup and restore, and the Torpedo vial, with a 14-day free trial. If you bought Plumb Level before, you keep Pro.