TrueRuler vs Digital Ruler Pro

TrueRuler is a screen ruler with manual calibration, designed for checking and comparing the length of small objects that fit within your screen. Move the green start guide and red end guide to see the distance between them. Switch between centimeters and inches, or change the ruler direction to suit the object you are measuring. Features • Centimeter scale with 1 mm divisions. • Inch scale with 1/16-inch divisions. • Two movable guides with a direct length readout. • Lock the guides to avoid accidental movement, or reset their positions. • Expand the ruler to full screen while keeping measurement controls within reach. • Calibrate against a reference of known length. • Save horizontal and vertical calibration separately. Measuring requires no account or internet connection. Calibration settings stay on your device. Before measuring Check the scale against a physical ruler before first use, and calibrate each direction when needed. Start from the zero mark shown on the screen. Actual accuracy depends on the device, display settings, and calibration. Decimal places in the readout do not indicate certified measurement accuracy. For iPhone and iPad. Supports device rotation and horizontal or vertical ruler layouts.

Turn your iPhone into a precise digital ruler. Measure any object in seconds — in centimeters or inches, with no internet connection required. KEY FEATURES • Linear Ruler — accurate cm and inch measurement with a draggable pointer • 2D Measurement — measure length and width at the same time • Device Calibration — calibrate with a credit card, ID card or A4 paper so results stay reliable on any screen • Measurement History — save, review and manage every reading • Lock Mode — freeze the current reading and take a clean screenshot HOW IT WORKS 1. Calibrate once with a standard object (a credit card works great) 2. Place the object you want to measure on the screen 3. Drag the pointer to the edge and read the result instantly DIGITAL RULER PRO Unlock everything with a single one-time purchase — no subscription, no auto-renewal: • Additional calibration objects (ID card, A4 paper) • Unlimited measurement history • Advanced export with watermark control • Enhanced sharing options Already purchased Pro? Tap "Restore Purchases" on the upgrade screen. PERFECT FOR Home DIY, crafts, sewing, education, furniture checks, package sizing and professional field work — a ruler is always in your pocket. ACCURACY TIP A screen ruler is most accurate after calibration. For best results, calibrate once per device and keep the phone flat and steady while reading. PRIVACY All measurements and settings are stored locally on your device. We do not collect, transmit or share your personal data. No analytics, no ads, no tracking. No internet connection required. Privacy Policy: https://digitalrulerprivacypolicy.vercel.app/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/