OneTool: Level, Ruler, QR

OneTool puts 21 everyday tools into one light app: instead of installing one app for the level, one for QR codes and one for the flashlight, you have them all in one grid.

MEASURE
• On-screen ruler and protractor
• Bubble level
• Compass and altimeter
• GPS speedometer
• Unit converter

CAMERA AND LIGHT
• Magnifier and mirror
• QR code and barcode scanner
• Flashlight and strobe
• Light flicker detector
• Heart rate with the camera (for reference only, not a medical device)

SOUND AND TIME
• Sound meter to measure noise in decibels
• Stopwatch, timer and metronome

UTILITIES
• Calculator
• QR code generator
• Secure password generator
• Metal detector using the magnetic sensor

You choose what to see: in Settings > Visible tools you hide the ones you don't use and reorder the grid.

Free with no limits: level, ruler, compass with altimeter, QR scanner and flashlight. A short video unlocks every other tool for 24 hours, plus the choice of visible tools, the language and the theme.

A pocket toolkit, a real toolbox on your phone: a bubble level to hang a picture, a ruler and protractor for objects and angles, a compass, a QR code reader and a flashlight always at hand. Works offline, no internet needed.

No account and no server: nothing you measure leaves your device.