01 / CORE MOTION
No guesswork
Gravity from the iPhone is filtered and evaluated on the device. A combined X/Y error keeps diagonal tilt honest instead of hiding it behind one axis.
LEVELDOWN · OFFLINE-FIRST TOOL
Find level. Hear the difference.
A calm, precise iPhone tool for leveling mounted objects and measuring real surface inclination — without an account, a camera, or the cloud.
LIVE SIGNAL
LOCKED
HORIZONTAL
0.0°
Stable window saved
0.01
minimum rear signal
7
interface languages
100%
on-device measurement
LEVELDOWN / PRINCIPLES
Designed for contact
When the screen is pressed against an object, the display may disappear. LevelDown keeps the important feedback physical, clear, and recoverable.
02 / TWO INTENTS
Choose what you mean
Use automatic leveling for a target surface, or explicitly switch to inclination mode when you want the real angle and downhill direction.
03 / FROZEN RESULT
Pick it up, keep the result
A stable window is averaged and saved. When the phone is lifted, LevelDown stops live feedback and shows the measurement you actually made.
LEVELDOWN / INTENT
Two honest ways to measure
The phone cannot know whether you want to level something or measure its slope. LevelDown lets you choose, then keeps those meanings separate.
01 / LEVELING
Auto level
For tables, shelves, frames, rails, and mounted objects that should be level. Near-horizontal and near-vertical reference poses are accepted; ambiguous slopes stay unknown.
- Horizontal surfaces use the combined X/Y error
- Vertical mounting finds the lowest physical hardware edge
- Voice, beeps, and optional rear light point to the action
02 / INCLINATION
Measure slope
Choose this mode when the angle itself is the answer. LevelDown measures the true surface inclination, the usable percentage grade, and the downhill edge or corner.
- Accepts deliberate screen-down slopes from 0° to near 90°
- Uses gravity projection for large angles
- Does not turn a measurement into a fake ‘closer’ signal
LEVELDOWN / FEEDBACK
Put the phone down. Let the signal speak.
LevelDown is made for the moment when you cannot see the screen. The session is simple enough to follow by voice, beeps, and light.
Make contact
Place the screen against the measured object using the same contact setup as your calibration profile.
Hold still
The app waits for a stable window instead of turning a passing reading into a result.
Adjust or lock
Follow the named low edge, or wait for the actual angle to be captured. Lift the phone to see the frozen result.