LevelMaster: Bubble Level
Bubble Level & Angle Meter
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Turn your phone into a precision spirit level. Flat & vertical bubble levels, an angle meter, a level beep alert, calibration, and a camera overlay — fully offline.
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.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Fixed minor bugs.
The developer, Yuki Okawa, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 25.2 MB
- Category
- Utilities
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- Provider
Yuki Okawa
- Yuki Okawa has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
- Copyright
- © Yutech