Usetulvo Level, Ruler, Compass

Usetulvo Measure turns your phone into a pocket toolbox: a spirit level, a clinometer, a ruler, a protractor and a compass, read straight from the phone's sensors. It works offline, asks for no permissions and needs no account. No ads.

SPIRIT LEVEL
• A bullseye level when the phone lies flat, a tube level when it stands on an edge
• The angle in degrees and the slope in percent, left–right and front–back
• Calibrate on a surface you know is level, once lying flat and once on an edge
• An optional short buzz when it is level

INCLINE (CLINOMETER)
• Measure the angle of a roof, a ramp or stairs along the phone's long or short edge
• See at a glance which end is higher
• Tap Zero here on one surface and read the difference to a second one

HOLD A READING
• Tap Hold, or tap anywhere on the instrument, to freeze the value
• See the angle, the slope and the rise over 1 m (or 1 ft), and copy the value

RULER
• A true-size ruler along the edge of the screen, in centimetres or inches
• Drag two lines to the ends of an object and read its length
• Calibrate it once with any bank card for exact sizes

PROTRACTOR
• Lay an object against the screen's edge and drag the two arms along its sides
• Shows the angle and the other side at the same time

COMPASS
• The heading in degrees and the direction (N, NE, E…), from magnetic north
• Tells you when it needs a figure-8 calibration

PRIVATE
Calibrations and settings are kept only on this phone. Keep the screen on while you use the level or the compass.

Available in 21 languages. Phone sensors vary: for precise building work, check with a dedicated tool.

GOOD FOR
• Hanging pictures and shelves straight
• Checking a table, a washing machine or a camper is level
• Finding the pitch of a roof, a ramp or a staircase
• Measuring small objects when there is no ruler at hand
• Finding north on a walk or when you set up a satellite dish

Developed by Lunar Code Tech, Netherlands.