What it is
Level Tool uses the iPhone's motion sensors as a level and clinometer for rough angles and slopes, including jobs like leveling an RV. The reading is approximate and is not a substitute for a real level on structural or safety-critical work.
Who it's for
People who want a quick angle or a level check and already have an iPhone: hanging a frame, checking a slope, or getting an RV close to level before they follow the manufacturer's steps.
What it does
- Level and degrees. Shows whether a surface is close to level and how many degrees it is off, using the phone's sensors.
- Angles and slope. Reads an angle so you can compare a pitch or a slope. Phone sensors are approximate, and accuracy varies by phone and by how steadily you hold it.
- A zero you set. You can zero the reading on a surface you already trust, then measure relative to that. Zeroing does not turn the phone into a calibrated survey instrument.
How it compares
The Measure app that comes with iPhone includes a level. Apple's guide says those measurements are approximate. Level Tool is a dedicated clinometer for the same kind of rough check, aimed at angles and jobs like an RV, without the measuring-tape part of Measure. For a staircase, a roof you will walk on, or anything structural, use a proper level or instrument and the method the job requires. A phone is a check, not a certification.
Guides
Screenshots
Current screenshots are on the App Store listing. This page does not invent pictures of the interface.
Questions people ask
How accurate is it?
Approximate. Accuracy varies by iPhone and by how steadily you hold it. Apple describes the built-in level the same way. Use a real level when the result matters for safety or structure.
Can I level an RV with it?
You can use it as a rough pitch and roll check while you adjust, then follow the RV maker's procedure. Do not treat the phone as the only instrument for a setup that affects safety.
How do I check the reading?
Set the phone on a surface you have already checked with a bubble level. If Level Tool is not near zero, use its zero or calibrate control, then check again.
Does it need a network connection?
No. The sensors are in the phone.