RulerApp: True-Size Ruler

RulerApp turns your iPhone or iPad screen into a true-to-size ruler, so you can measure everyday objects without hunting for a tape measure.

Features:

• On-screen ruler at true scale (cm/inch, down to 1mm or 1/16 inch)
• Accurate sizing using your device's actual PPI
• Works in portrait and landscape (landscape measures farther)
• Drag start/end markers to auto-calculate the distance between two points
• Quick calibration using a standard credit card (85.6mm)
• Built-in cm / inch / mm unit converter

Great for:

• Quick measurements when you don't have a tape measure
• DIY projects
• Designers checking print dimensions
• Students measuring for science experiments

Measurements are processed on your device.

FREE VERSION AND FULL ACCESS The free version displays banner ads. A one-time Full Access purchase unlocks every feature and removes ads. Customers who previously bought the paid app also continue without ads.