RefCalc is a fully offline refrigerant Pressure–Temperature chart and Superheat / Subcooling calculator. It has no backend server, no user accounts, no analytics SDK, and does not request network access on your device. Every calculation happens locally, on your phone.
None. RefCalc does not collect, transmit, or store any personal information, usage data, device identifiers, or location data, either on our servers or with any third party — because RefCalc has no servers and includes no third-party tracking or advertising libraries.
RefCalc saves your app preferences locally on your device only (for example: selected unit system, pressure reference, language, and refrigerant selection). This data:
RefCalc does not integrate any third-party analytics, advertising, or crash-reporting SDKs. The only external interaction is the operating system's native "Rate this app" prompt (Apple's StoreKit), which is handled entirely by Apple and does not share any data with us.
RefCalc is a professional tool for HVAC/R technicians and is not directed at children. Since the app collects no data of any kind from any user, it does not knowingly collect information from children.
If this policy ever changes, the update date above will be revised and the new policy will be published at this same address.
Questions about this policy? Contact the developer at duonghedspi@gmail.com.