📏 Screen Ruler: Measure It — The Most Precise On-Screen Measurement Tool
Turn your Android phone into a precision measurement instrument! Screen Ruler lets you measure real-world objects directly on your phone screen using just your fingertips — no additional hardware required.
Whether you need to quickly measure a coin, a credit card, a screw, or any small object, Screen Ruler gives you accurate results in millimeters, centimeters, and inches.
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🔧 KEY FEATURES
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📐 PRECISION RULER
• On-screen ruler with fine mm, cm, and inch tick marks
• Drag two measurement handles with your fingers
• Real-time distance displayed as you move handles
• Horizontal, vertical, and free diagonal measurement modes
• Angle display between the two measurement points
🎯 SMART CALIBRATION
• Calibrate using a standard credit card (85.6 × 54 mm)
• Manual calibration — enter any known measurement
• Calibration status badge so you always know your accuracy
• Reset to factory DPI at any time
🔍 ZOOM MAGNIFIER
• Built-in magnifier loupe (up to 3× zoom)
• Follows your active handle for ultra-precise placement
• Toggle on/off from the action bar
📋 MEASUREMENT HISTORY
• Save unlimited measurements with custom labels
• View your full measurement history at any time
• Export and share measurements as text
• Copy individual measurements to clipboard
• Delete individual records or clear all at once
⚙️ SETTINGS & CUSTOMIZATION
• Dark Mode, Light Mode, and System theme support
• Snap-to-Tick for automatic precision alignment
• Haptic feedback on handle pickup and tick snap
• Keep Screen On while measuring
• Micro-adjustment nudge pad for pixel-perfect placement
📵 100% OFFLINE
• Works completely without internet
• No account required
• No ads, no subscriptions
• No unnecessary permissions
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💡 HOW TO USE
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1. Place the object flat on your phone screen
2. Drag Handle A to one edge of the object
3. Drag Handle B to the other edge
4. Read the measurement instantly on screen
5. Save or share your measurement — done!
For best accuracy, calibrate the app first using a standard credit card or a ruler you already trust.
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⚠️ DISCLAIMER
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Screen Ruler is designed as a practical everyday measurement tool. However, please note:
• Measurement accuracy depends on your device's screen DPI and display characteristics. Some devices report inaccurate DPI values from the manufacturer.
• For critical or professional measurements (engineering, medicine, construction, legal), always use certified physical measuring instruments.
• The developer does not accept responsibility for any decisions made based on measurements taken using this app.
• Calibrating the app using a known reference object (such as a standard credit card) is strongly recommended to improve accuracy on your specific device.
• Screen protectors, display scaling settings, or accessibility zoom may affect measurement precision.
This app is intended for general-purpose, everyday measurement use only.
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📬 CONTACT & SUPPORT
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Have a question, suggestion, or found a bug?
📧 Email us: kuasmakusumya@gmail.com
We read every message and respond as quickly as possible. Your feedback helps make Screen Ruler: Measure It better for everyone!
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> **Tags for Play Store (optional internal use):**
> ruler, measure, measurement, screen ruler, millimeter, centimeter, inch, calibration, precision tool, measuring tape, size checker, dimension tool
Measure anything on your screen with precision. mm, cm & inch ruler.