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First release. A bubble level for flat surfaces and a tube level for every edge, calibrated in two readings so the slope of the table is not baked into every measurement. An on-screen ruler in millimetres or inches, calibrated once against a bank card. Save a reading or a length with a note to say where it was.
Bubble level, angle finder and on-screen ruler, calibrated in two readings.
Tilt is a bubble level and a ruler for the jobs around a home: a shelf, a row of pictures, a washing machine that walks across the floor, a door that will not stay shut. A CALIBRATION THAT DOES NOT LIE Most level apps calibrate by "set this as zero". That stores the phone's own error and the slope of whatever it was lying on, and subtracts both from every reading afterwards. Calibrate on a table a third of a degree out, and every shelf in the house reads a third of a degree wrong while the app says 0.0°. Tilt takes two readings in the same spot, with the phone turned round end for end between them. The slope of the surface changes sign between the two readings and the phone's own error does not, so the average is the phone alone. The surface does not need to be level. Each side of the phone is calibrated on its own, because a camera bump or a rounded edge is a fact about one side. THE LEVEL • A round bubble with both angles when the phone lies flat • A tube level when it stands on any edge, in portrait or landscape • The angle shown to a tenth of a degree, with the fall in mm per metre or inches per foot • Hold, to freeze the reading when you cannot see the screen • A tick you can feel when it comes level THE RULER • Millimetres, or inches to the sixteenth, down the long side of the screen • Two lines you drag to the ends of what you are measuring, so the edge of the phone's case does not matter • Calibrated once against a bank card, which is 85.60 mm long everywhere SAVED Keep a reading or a length with a note to say where it was, and find it again in one list. WHAT IT DELIBERATELY DOES NOT DO • No camera. The level is the phone's gravity sensor and the ruler is the screen. • No location, no account, no sign-in. • Nothing to allow: the app never shows a permission request. PRIVACY Your saved readings and your calibration are stored on this phone and nowhere else. The app has no server. Android cloud backup is switched off for it, because a calibration belongs to one phone and would be wrong on the next. The app shows ads. The only data that leaves your device is what Google AdMob needs to show them, and it never includes anything you typed. Full policy: https://dash-fusion.github.io/privacy/list-level