Last updated: February 13, 2026
HVAC Apprentice does not collect, store, transmit, or share any personal data. All data stays on your device.
HVAC Apprentice collects no data whatsoever. No personal information, usage analytics, or telemetry is collected.
All app data is stored locally on your device using localStorage. None of this data is synced, uploaded, or shared.
If you purchase HVAC Apprentice Pro, the transaction is processed by our payment provider (LemonSqueezy). We do not store your payment information.
HVAC Apprentice works entirely offline after initial installation. No data is sent to any server during normal use.