How to Use
- Stand square to the wall and photograph the edge you are checking — a frame, shelf, blind or door frame
- HangTrue finds the straight edges, measures the angle and draws the measured line over a dashed true reference
- You get a verdict — true (under 0.3°), slightly out (0.3–1.0°) or visibly crooked (over 1.0°)
- Set the object width (100–2400 mm) and the angle becomes a correction in millimetres, with which end sits low
- Switch between Level (horizontal) and Plumb (vertical) at any time
FAQ
- The reading looks wrong HangTrue measures the angle in the photo, so shoot square to the wall, not from one side, and let one long, clearly visible edge fill the frame.
- It says there are no clear straight edges The edge needs contrast against what is behind it. Get closer, or shoot where the light makes the edge stand out.
- Does it change or upload my photo? No. Every measurement is worked out on your device. HangTrue does not edit, save, copy or upload your photo.
Privacy
HangTrue needs no account. Photos are read on your device only to measure angles and are never uploaded. We use anonymized analytics to improve the app experience.