Angle Measurer

Measure angles and distances on any photo.

Contact

Getting started

• Pick a photo: tap Photos to choose one or open a saved project. Press and hold Photos to go straight to your photo library. Camera takes a new one.
• Move the points: drag any dot. A magnifier appears while you drag so you can place it exactly. Pinch to zoom; double-tap to fit the photo again.
• Add more: tap Add for another angle or a measuring tool. Each one gets a numbered chip at the top; tap a chip to select it.
• Delete: tap a line, then tap Delete. Or tap the trash icon on the selected chip. Reset clears everything.
• Undo: shake your iPhone.
• Hide the numbers on the photo: tap the numbers at the top of the screen. Tap again to bring them back.

What the colors mean

3-point angle (A, B, C)

• Blue is the angle at B, between A and C.
• Orange is the other side of B (360° minus blue).
• Pink is how far the line bends at B (180° minus blue).
• Add → Add A′ or C′ limb adds an extra arm and measures it against A or C.

Two-line angle

• Two separate lines; the angle is measured where they would cross.
• Blue is the larger angle between them, orange the other side, and pink the smaller angle.
• Drag a dot to move one end, or drag the line itself to move it whole.

Measuring tools

• Inclination: how far an edge (points 1 and 2) is from square to a reference line (R1 and R2).
• Tilt: the same, with a direction: positive when point 1 sits further toward R2 than point 2.
• Distance: the gap between two points, in millimeters.
• Offset: how far point 2 sits past point 1 in the direction of the reference line, in millimeters.
• Scale: place both ends on something of known length and set that length. Distance and Offset need a Scale on the same photo.

Photos of a screen

Taking a photo of a monitor at a slant stretches every angle. Use Add → Straighten photo: drag the four corners onto the screen's corners and pick the screen's shape (16:9 for most monitors). The photo is flattened before you measure.

Saving and sharing

• Save image to Photos: the photo with all measurements drawn on it.
• PDF report: the marked-up photo and a table of results, saved to Files or shared.
• Save project to Files: keeps the photo and its points so you can reopen and keep editing later (Photos → Open saved project).
• Copy measurements: the results as plain text.

Nothing is stored inside the app. Your work is kept only where you save it.

Important