Chemours PT Calc is a free app that is available to download from the Google Play Store. The app is a handy tool that is designed to help HVACR technicians perform various calculations on the go. 

With this app, you can calculate the pressure and temperature of a system that is either partially or fully charged with a refrigerant. The tool can also be used to calculate the amount of refrigerant that is needed to achieve a desired temperature in a given pressure system. 

The data is based on industry-standard values and can be used for quick and reliable system diagnosis. The app also includes a detailed description of each refrigerant that is available in the market.