Foldmeter: Hinge Angle & Ruler

The folding rule for your iPhone: ruler, protractor, level and diameter gauge. And on iPhone Duo, the hinge itself measures – to the degree, live as you fold.

Foldmeter turns your iPhone into a measuring tool – and your iPhone Duo into a folding rule: unfold it and the app shows its angle to the degree, live as you fold.

ON EVERY IPHONE • Ruler: Centimeters or inches along both screen edges. • Diameter: Lay a screw or drill bit on the screen, drag the lines to its edges, read the size – with a hint for the matching thread size (e.g. M6 or 1/4″). • Protractor: Place an object on the screen, drag the arms to its edges, read the angle. • Level: Upright for shelves and picture frames, flat as a bubble level for tables and surfaces.

ON IPHONE DUO • Hinge angle: Your Duo's angle in large digits, with a side view of the device. • Hold values: Keep up to three readings and compare them. • Ruler and diameter on both the inner and the outer display.

PRIVACY No ads, no tracking, no account. All readings stay on your device.