Slope Level

A level that answers in the unit your trade actually uses.

Every level app on your phone says 12 degrees. Nobody pours a slab in degrees. Slope Level reads the same tilt as ¼ in/ft, 2 %, 4/12, 21 mm/m or 1:48 — and tells you how much the far end drops over the run you are working on.

Free forever

The level itself, flat and on edge, with a big readout, degrees, the zero, an alert when it hits level and holding a reading. No ads, no subscription, no account.

The one-time unlock

Trade units · the drop over a distance · measuring an angle in a photo · exporting that photo with the reading written on it · saved measurements with a name, a note and a photo · and a converter for when the plan says 2 % and you need it per foot.

Honest about what it is

After zeroing, around ±0.2°. That is what a phone sensor gives — this app and every other one.