At Access Sensor Technologies, our goal is to make water testing easier and more reliable. This Analysis App is a companion image analysis application for our water chemistry test cards. The app measures the area of the color change inside the circular test area. The area measured is directly correlated to the concentration of the analyte being measured and is reported on screen as parts per million after an image is taken. Measuring area of color change, instead of small changes to a colors hue, makes our test more reliable between different camera and phone platforms. This is version 1.0 of our analysis app, so currently only our water test for iron is supported. We plan to roll out updates for our other water based metal tests throughout 2017. Please feel free to contact us with questions or feedback through our website at https://accsensors.com.