ColorMetric

Water Testing, Perfected for Your Eyes and Your Environment. 
Are you tired of squinting at paper charts trying to decide if your Nitrate is 10 or 20? ColorMetric transforms your iPhone into a professional-grade colorimeter. Designed for both freshwater enthusiasts and reef-keepers, our app eliminates the subjectivity of traditional testing. 
What makes ColorMetric different?
Intelligent Lighting Calibration: Room lighting often distorts colors. ColorMetric allows you to calibrate the app to your specific environment, ensuring your camera "sees" the same color every time, regardless of whether you’re under LEDs or sunlight.
Individual Card Calibration: Every test kit brand has slight variations. You can calibrate the app to your specific test cards for unparalleled accuracy.
Guided Test Assistant: Never botch a 5-minute wait again. The app walks you through every step of the testing process with integrated timers and clear instructions for every parameter.
Dual Environment Support: Specialized profiles for Saltwater and Freshwater aquariums, covering everything from pH and Ammonia to high-sensitivity Reef parameters like Phosphate and Magnesium. 
A Healthier Tank Starts with Better Data
Accuracy is the difference between a thriving ecosystem and a crash. ColorMetric bridges the gap between affordable liquid tests and expensive digital monitors, giving you the precision you need at a fraction of the cost. 
Download ColorMetric today and stop guessing.

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Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/