Camera Ring Sizer
No in-app products collected for this app.
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Description
No more guessing your ring size or making extra trips to the jeweler. **Camera Ring Sizer** uses your phone's camera and a simple coin to measure your ring size accurately and effortlessly.
Perfect for online ring shopping, surprise gifts, or anytime you need a quick ring size check. Just grab a coin and your phone — Camera Ring Sizer takes care of the rest!
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### HOW IT WORKS
1. **Place a coin** on your finger like a ring.
2. **Take a photo** using the in-app camera.
3. **The app identifies the coin** and measures your finger automatically.
4. **Get your ring size** in millimeters — and you're done!
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### KEY FEATURES
**AI-Powered Coin Recognition:** Automatically detects EUR and CZK coins using on-device machine learning. No internet connection is required for measurement.
**Precise Computer Vision:** OpenCV-based contour detection finds both the coin and your finger boundaries for highly accurate sizing.
**Smart Screen Calibration:** Uses device-specific pixel density data for millimeter-accurate results, going well beyond what the standard OS reports.
**Manual Adjustment:** Didn't get a perfect automatic detection? Fine-tune the circles manually on your screen for maximum accuracy.
**Physical Verification:** Display a true-to-size circle on your screen so you can place an actual ring on it to double-check the result.
**Multilingual:** Available in English, Czech, and German.
**Privacy First:** All image processing happens locally on your device. No photos are uploaded or stored remotely.
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### SUPPORTED COINS
Euro (EUR)
Czech Koruna (CZK)