Free
In-App Purchases
About
Precise measuring tools
Ruler, grid, calibration, and ring sizing in one clean workspace.
Ruler & Grid Studio
High-precision multi-unit rulers with a built-in grid for everyday measurements.
Smart Ring Sizer
Align a real ring with the guide to estimate diameter, circumference, and size.
Card Calibration
Use a standard card edge to improve real-world measurement accuracy.
Free Measuring Toolkit
Full-screen grids, scale presets, and measurement overlays are included for everyone.
Precise ruler, grid, calibration, and ring sizing tools.
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What's New in Ruler Studio
1.0.1
July 21, 2026
Ruler Studio is now completely free. Full-screen grids, scale presets, and measurement overlays are included for everyone.
1
In-App Purchases
$2.99
Ruler Pro Lifetime
Unlock full-screen grid and advanced measuring tools.
