This app turns your smartphone into a bubble level!

With 3 different viewing options, this level can calibrate with all 4 sides as well as show the angle and slope in percentage or roof pitch. Comes with several sound effects and orientation locking.

There are different types of spirit levels for different uses:

- Surveyor's leveling instrument
- Carpenter's level (either wood, aluminium or composite materials)
- Mason's level
- Torpedo level
- Post level
- Line level
- Engineer's precision level
- Electronic level
- Inclinometer
- Slip or Skid Indicator
- Bull's eye level

Today level tools are available in most smart phones. These mobile apps come with various features and easy designs. Also new web standards allow websites to get orientation of devices.