Video coming soonChoose the rules and check
Basics · Written steps
Read the steps : Choose the rules and checkSteps, videos and tips for the tool.
Check ramps, walkways, stairs, ladders, drain pipes, shower floors, the ground by the walls, roofs and trench walls against US, English or Australian rules.

Video coming soon
Getting started
Pick the rules and units at the top of the list, then tap a check.
This is a still image. The how-to video has not been recorded yet.
Read the steps
Video coming soonBasics · Written steps
Read the steps : Choose the rules and check
Video coming soonBasics · Written steps
Read the steps : Measure the slope and cross slope
Video coming soonBasics · Written steps
Read the steps : Check stair dimensions or ramp risePick the rules and units at the top of the list, then tap a check.
Lay the phone flat on what you check, its long side along the slope. A ramp’s or path’s cross slope is read at the same time. When the phone lies still the reading holds by itself; tap Hold reading to keep it as the check’s last result.
For stairs, tap Riser height and Tread depth to type them, then lay the phone across the edges of two steps to compare the pitch. On a ramp, type the length of the run to see its rise.
Try these steps in the app. All tour instructions stay readable here.
Pick the rules and units at the top of the list, then tap a check.
Lay the phone flat on what you check, its long side along the slope. A ramp’s or path’s cross slope is read at the same time. When the phone lies still the reading holds by itself; tap Hold reading to keep it as the check’s last result.
For stairs, tap Riser height and Tread depth to type them, then lay the phone across the edges of two steps to compare the pitch. On a ramp, type the length of the run to see its rise.
Find Roof pitch & slope in these apps.
Each result says whether a reading is within the rule it names. It is not a building inspection: check the rules that apply where you build.