A handy ruler to measure a small distance using your phone screen.

Features:
• Simple and elegant user interface
• Automatic screen size detection
• Manual ruler calibration for accurate scaling
• Two sided rulers (cm and inch, or use other units)
• Measure length in various units: mm, cm, inch, or foot
• Display measurement in decimals and fractions
• Light and dark theme

Additionally, activate Ruler Pro Edition to unlock more features:
• No advertisements
• Scrollable ruler
• Configurable inch fractions
• More measurement units: point (PostScript), line
• Asian measurement units: bu, sun, tsun, fen, cun, krabiat, nio