LevelMaster vs Bubble Level

LevelMaster turns your phone into a precision spirit level and angle meter, using the built-in motion sensor — no extra hardware needed. BUBBLE LEVEL • Circular bubble level for flat surfaces — lay the phone on a table, shelf or countertop • Bar bubble level for vertical surfaces — hold it against a wall, door frame or picture • Automatically switches between flat and vertical modes as you move the device ANGLE METER • Large protractor-style gauge with a live degree readout • "Set as 0°" lets you zero out any starting angle — handy for measuring a slope or a change in angle (e.g. a ramp or a roof) LEVEL ALERT • A confirming beep and a light vibration the instant the device becomes level • Turn the beep or vibration off independently in Settings CAMERA OVERLAY • See a level line through the camera while you hang a shelf, a frame or a piece of art • The line turns green the moment it's level CALIBRATION • Correct small sensor offsets against a known-level reference, per device MADE FOR EVERYONE • Light & dark themes with multiple accent colors • English and Japanese • Keep the screen on while measuring PRIVACY FIRST • Works fully offline. The camera is used only to overlay the level line — nothing is ever captured, saved, or sent anywhere. No account, no cloud, no tracking. Great for DIY projects, hanging furniture after a move, and checking a boat or dock is level while fishing. Note: readings are approximate and depend on your device's sensor. LevelMaster is intended for everyday DIY use, not for professional or regulatory measurements. Free, supported by ads.

Bubble Level & Ruler turns your iPhone or iPad into a precise, easy-to-read spirit level and pocket measuring tool. Hang pictures perfectly straight, align shelves and furniture, check the slope of any surface, or measure small objects — no extra tools needed. PRECISE BUBBLE LEVEL • Accurate readings down to 0.1 degree • Works horizontally and vertically — plus a bullseye level for flat surfaces • Large, clear angle readout you can see from across the room • Switch between degrees and percent slope • One-tap calibration for perfect accuracy on any device LOCK & SAVE MEASUREMENTS • Tap to lock the current reading — no more chasing the bubble • Measurement history saves your readings automatically • Review horizontal, vertical, and tilt values anytime BUILT-IN SCREEN RULER • Measure small objects right on your screen • Centimeters and inches side by side • Drag to measure — the exact length appears instantly MADE TO BE SIMPLE • Clean, realistic spirit-level design • Light and dark mode • Multiple color themes • Haptic feedback when the surface is level • Works on iPhone and iPad • No account, no sign-up — open the app and start measuring WHO IS IT FOR? Perfect for DIY projects, home improvement, hanging picture frames and shelves, assembling furniture, checking countertops and appliances, woodworking, construction, camping and RV leveling — anywhere you need a quick, reliable level or ruler.