Slope & Fall LevelSlope & Fall Level
A level for when the answer isn't zero — set any grade and hit it exactly.
Download on the App Store
Screenshots
Features
Set the grade you actually need
Most spirit levels only tell you whether something is flat. A drain has to fall, a ramp has to climb and a deck has to shed water. Enter the grade you want and the app shows the difference between where you are and where you want to be.
Four notations, one job
Percentage, angle, a ratio like 1:80, or a fall in millimetres per metre. The app converts between all of them, so a drawing marked 1 in 80 and a spec written as 1.25% stop being two different problems.
It tells you which way to move
Not just how far off you are, but whether to ease the slope off or steepen it, and by how much.
A tone when you reach it
Get the grade right and the app sounds a tone and gives a short buzz, so you can keep your eyes on the work instead of the screen.
Calibrate against a surface you trust
Zeroing on a known-true surface cancels out the phone case and any bench that is not quite flat.
Save the grades you use often
Drains, ramps, gutters and decks are already there as presets, and you can store your own so the next run of pipe starts where the last one left off.
Most spirit levels only tell you one thing: whether something is flat. But
a drain has to fall, a ramp has to climb, and a deck has to shed water.
Slope & Fall Level is built for the times the answer is not zero.
Enter the grade you want in whatever notation your trade uses — a
percentage, an angle, a ratio like 1:12, or a fall in millimetres per
metre. The app converts between all of them, so a drawing marked 1 in 80
and a spec written as 1.25% stop being two different problems.
Rest the phone on the pipe, the board or the screed rail, and the display
shows the difference between where you are and where you want to be. Get
it right and the app sounds a tone and gives a short buzz, so you can keep
your eyes on the work instead of the screen.
Calibrate against a surface you trust to cancel out the case and any
bench that is not quite true. Save the grades you use often, so the next
run of pipe starts where the last one left off.
Readings come from the phone's own motion sensors, and accuracy depends on
the phone lying flat and still on a straight surface. It works alongside
your level and your laser, not in place of them, and any grade that has to
meet a code or a drawing should be confirmed with the instrument that
drawing was written for.