Toolbelt: Level, Ruler, Angle

Toolbelt puts the tools you reach for on the job into one simple app. No clutter, and no full-screen ads popping up while you work.

LEVEL & ANGLE
• Spirit level: bull's-eye when the phone lies flat, bar level on any of its four edges, plumb when upright
• Two-step flip calibration that needs no level surface
• Hold, zero, beep and vibrate when level, adjustable tolerance
• Degrees, %, mm/m, in/ft, roof pitch x/12 and 1:n
• Angle finder: zero on one surface and read the next, with half (miter), 180° − and 90° − at a glance
• Laser line and plumb over the camera, with photos that include the reading

LENGTH & DISTANCE
• On-screen ruler and caliper in mm and 1/16 inch, calibrated with any bank card
• AR tape measure on ARCore phones: multi-point lines with each length and the total
• Distance and height of far objects from the camera angle

CALCULATORS
• Feet-inch-fraction calculator that also mixes metric lengths
• Unit converter for trade units, including fractional inches and traditional pyeong, tsubo and shaku
• Slope and fall, right triangle (rafters, diagonals), stairs, area and concrete volume
• Materials: tiles and flooring, boards, paint, studs, bricks and blocks
• Electrical: Ohm's law and power, voltage drop with a suggested wire size, AWG to mm² table

SENSORS & LIGHT
• Metal and stud finder (screws, nails, rebar) with beeps that speed up near metal
• Compass with bearing lock and your local declination
• Sound level meter and light meter (lux)
• Magnifier with zoom, freeze and light, and a flashlight with strobe, SOS and screen light

MADE FOR THE JOB
• Big high-contrast numbers, glove-sized buttons, dark or light theme
• Pin your favorite tools and add any tool to your home screen
• Save readings with notes and share them
• Works offline with no sign-up. Camera and microphone are asked for only when you open the tools that use them
• One small banner ad and nothing else. If you like, watch one video to hide the banner for a day

Phone sensors are not certified instruments. Readings are approximate, so check critical measurements with proper tools.

Recent changes:
Simpler ads: the optional video for hiding the banner is gone. The app shows only one small banner at the bottom.