Inclinometer Level - Plumbrule

Level & Ruler in one app: Plumbrule is a bubble level and a ruler in mm and inches, plus an inclinometer, a protractor and a reading log. It is named after the carpenter's plumb rule, a straightedge and a level in one board, and it brings that same idea to your phone as one clean, precise measuring tool.

■ Ruler in millimeters and inches
• Metric scale on the left edge, inches (1/16) on the right, both shown at once
• Drag two lines to measure; the reading follows your finger
• Choose fractions (1/16, 1/32) or decimal inches
• Add segment: measure objects longer than your screen and get the total length
• Calibrate once with a bank card, a coin or any length you know, so the on-screen scale matches your display exactly

■ Bubble level and inclinometer
• Lay the phone flat for a bullseye level with X and Y angles
• Stand it on an edge and it becomes a tube level; the vial and the reading turn with the phone
• Shows Level or Plumb, turns yellow and gives a short vibration the moment you are within tolerance
• Units: degrees, percent grade, mm per meter, inches per foot and roof pitch (x/12)
• Hold freezes the reading so you can check it after moving the phone
• Zero measures relative to any surface, which is great for matching an existing angle or slope
• Two-step flip calibration removes your phone's sensor offset

■ Protractor
• Put the corner at the pivot, drag both arms, then read the angle and its supplement

■ Measurement log
• Save any reading with one tap
• Add a label so you remember what you measured
• Share your saved readings as text or CSV

■ Built like a tool
• Graphite theme that is easy on the eyes, or a high-contrast Daylight theme for outdoors
• Keeps the screen on while you measure
• Available in 30 languages
• No account and no sign-up

■ Getting started
• Calibrate the ruler once with a bank card, a coin or any length you know
• Run the two-step flip calibration for the level
• Lay the phone flat for the bullseye level, or stand it on an edge for the tube level
• Pick your unit: degrees, percent grade, mm per meter, inches per foot or roof pitch
• Tap once to save a reading to the log, add a label and share it

■ Who it is for
• Anyone hanging a picture or shelf who wants to check level or plumb
• DIYers and carpenters who need a quick angle finder, slope gauge or pitch reading
• Anyone measuring a small object in millimeters or inches
• People who want to keep a record of their measurements

■ Tips
• Calibrate the ruler and the level for best results
• Use Zero to match an angle from one surface to another
• Use Hold to freeze the reading, then look at it after moving the phone
• Switch to the Daylight theme when working outdoors
• Use Add segment for anything longer than your screen

■ FAQ
• Do I need an account? No. There is no account and no sign-up.
• Where are my readings stored? Your readings stay on your phone.
• Are there ads? A small banner ad appears only on the Log and Settings screens, never over the ruler, level or protractor.
• How accurate is it? Accuracy depends on your phone's screen and sensors. Calibrate for best results and double-check critical work with a physical tool.

■ Privacy
• No account, no sign-up; your readings stay on your phone
• Privacy policy: https://tanzsoft.com/plumbrule/privacy.html

Plumbrule: a ruler, bubble level, inclinometer and protractor in one tool.
Questions or ideas: [email protected]