Angle Finder: Inclinometer
Bubble level, slope, plumb
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Hang it straight the first time. Slope in degrees, percent or mm/m, plumb mode, hold and one-tap zero — a real angle meter in your pocket.
Is the shelf actually level? Set your phone on it and know in two seconds. Angle Finder turns the motion sensor into a spirit level, inclinometer and plumb tool: a round bubble for surfaces, a plumb readout for walls and posts, and slope in degrees, percent or millimetres per metre.
It reads gravity through CoreMotion's fusion filter — not raw accelerometer noise — so the number settles fast and stays put. Lay the phone flat and you get the bubble; stand it on an edge against a door frame and it switches to plumb mode on its own, because those are two different measurements and the app knows which one you need.
WHAT YOU GET
• Set the phone on the shelf and watch the bubble drift to the high corner — nudge the shim until it sits dead centre
• Stand the phone against a stud, post or picture frame and read exactly how many degrees to rotate to plumb
• Read slope your way: 1.2°, 2.1% or 21 mm/m — the fall your drain or ramp needs, straight off the dial
• Tap Hold with the phone pressed under a joist, pull it out, and read the frozen number in the light
• Zero against a surface you trust, so a slightly tilted bench stops polluting every reading after it
• A haptic tick the instant you hit level, so your eyes stay on the picture wire, not the screen
PERFECT FOR
• Renters hanging pictures, mirrors and floating shelves without a second pair of hands
• DIY TV mounting — check the bracket is level before you drill, plumb after
• Carpenters and site work: pitch and roll at once, ratio rise, mm-per-m fall
• RV and trailer campers levelling the rig before the fridge complains
WHY NOT JUST THE BUILT-IN MEASURE APP?
Apple's level shows one view in one unit. It has no slope percent, no mm/m, no hold button, no zero calibration, no haptic level alert and no target fall. The moment you need "2% towards the drain" instead of "roughly flat", it is out of its depth.
PRIVATE BY DEFAULT
Every reading comes from the motion sensor, on the device. No account, no location, no tracking, no data leaving your phone.
FULL ACCESS
Full Access unlocks the repeat-work tools: saved zero presets (zero against a bench, a jig, a van floor — and switch between them without re-zeroing) and target angle mode, which shows your distance from a chosen fall like 2% for a drain instead of distance from level. Choose a weekly or yearly auto-renewing subscription, or a one-time lifetime purchase.
Put your phone on the surface and find out what "level" really looks like.
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Privacy Policy: https://leanstudio.asia/privacy-policy
Support: support@leanstudio.asia
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First release.
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The developer, LEAN ASIA CO., LTD, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
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Information
- Seller
- LEAN ASIA CO., LTD
- Size
- 3.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Picture Hanging Lifetime $29.99
- Roof Pitch Yearly $14.99
- Tilt Meter Weekly $2.99
- Copyright
- © 2026 LEAN ASIA CO., LTD