Hinge Angle Meter

Hinge Angle Meter is a focused set of measurement tools for folding devices, iPhone, iPad, and Apple Watch.

On supported folding devices, the physical hinge becomes a natural digital bevel gauge. One side presents a large live angle while the other keeps every tool within reach. Swap the panels, rotate the interface manually, and follow precise visual, sound, and haptic guidance.

Tools included:

- Live angle measurement
- Exact 90° guidance
- Copy and reproduce an angle
- Complementary angle calculation
- Pitch and roll level with zero calibration
- Custom target angles
- AR distance measurement with the camera
- Local measurement history
- Independent Apple Watch angle gauge with Digital Crown target, Zero, Hold, and saved readings

On other supported iPhone and iPad models, Hinge Angle Meter uses the motion sensors for angle and level tools. AR Distance places two points in the camera view and calculates the distance between them. The Apple Watch app works independently and turns the Digital Crown into a precise target-angle control.

Privacy is simple: no account, ads, analytics, or internet connection required. Measurements remain on the device. Camera frames used for AR measurement are not stored or transmitted.