Toolbelt: Measure Tools

Toolbelt turns your iPhone into a pocket toolbox: a spirit level, ruler, protractor, compass, plumb line, flashlight, magnifier, and sound-level meter — all in one beautiful app. FREE: Level, ruler and flashlight. PRO (one-time purchase): Protractor, compass, plumb line, magnifier, and decibel meter, plus dark theme. Uses your device's sensors on-device — no account, no tracking.