Perfect Level

NAPOLEON STAFFORD

Contains adsIn-app purchases

About this app

Perfect Level turns your phone into a complete measuring toolbox: a precision bubble level, a laser level line, a calibrated on-screen ruler and an angle meter — all in one app.

Hanging a picture frame, mounting a TV, putting up shelves, laying tiles, levelling a washing machine or checking a surface on a DIY job? Perfect Level gives you an accurate reading in seconds.

★ BUBBLE LEVEL (SPIRIT LEVEL)
• Classic bubble level with a live, smooth readout driven by your phone's gravity sensor
• Lay the phone flat, or hold any of its 4 sides against an object to test for level or plumb
• One-tap calibration saves a stable offset, so every later reading stays true
• Switch between degrees (°) and percent slope (100% slope = 45°)
• Optional leveling sound tells you the moment every bubble is centred — keep your eyes on the work, not the screen
• Keep screen on, so the display never sleeps mid-measurement

★ LASER LEVEL
• Projects a bright reference line using your device flashlight — for alignment in dark corners, cupboards and crawl spaces
• Freeze a reading to lock it in place while you mark the wall

★ RULER & MEASURING TOOL
• Calibrated on-screen ruler: drag between two points to measure length
• Centimetres and inches, switch at any time
• Measurement modes: normal, length, sides and area
• Scale calibration matches the ruler to your exact screen
• Copy a measurement to the clipboard, or save it straight into Notes

★ NOTES & TASKS
• Save measurements, job notes and to-do items inside the app
• Keep every reading from a project together instead of scribbling on paper

★ BUILT TO BE USED, NOT UNLOCKED
• Every measurement tool is free — no feature is locked behind a paywall
• An optional one-time purchase simply removes ads for an uninterrupted workspace
• Works fully offline — no internet connection needed to measure
• Clean themes and multi-language support

PERFECT FOR
Hanging pictures, shelves and mirrors • mounting TVs • tiling and flooring • levelling appliances and furniture • carpentry and woodworking • measuring angles, slope, tilt and inclination • masonry and brickwork • caravan and camping levelling • any home improvement or DIY project

A NOTE ON ACCURACY
Perfect Level reads your device's built-in gravity and accelerometer sensors. Sensor quality varies between phone models, so calibrate on a known flat surface before precision work. The on-screen ruler is limited by your screen size — it is a calibrated ruler, not a camera distance measurement.

PERMISSIONS
Camera access is used only to switch the flashlight on for the laser level. Perfect Level takes no photos and records no video.

Carry a spirit level, laser level, protractor, clinometer and ruler in your pocket — download Perfect Level.

What’s new

Welcome to Perfect Level!

• Bubble level with one-tap calibration — in degrees or percent slope
• Laser level line for dark corners and tight spaces
• Calibrated on-screen ruler in cm and inches, with length, sides and area modes
• Leveling sound so you can watch the work, not the screen
• Save any measurement straight into Notes and Tasks

Every measurement tool is free. Nothing is locked behind a paywall.

Found a bug? Settings → Customer support.