Privacy Policy
Effective July 30, 2026
What we collect
Account: your email address and name (if you provide one). Sensor data: pressure, temperature, and optional air-quality readings from your device, with timestamps and a device identifier. System details you enter: airflow, blower type, electricity rate, device location label. Orders: what you bought, shipping address, and payment status. Card numbers go directly to Stripe and never touch our servers.
How we use it
To run the Service: show your dashboard, compute filter-replacement economics, send the alerts you've enabled, fulfill orders, and prevent abuse. We do not sell your data or use it for third-party advertising.
Who we share it with
Only service providers needed to operate: Stripe (payments), Resend (email), Vercel (hosting), and Neon (database) — each bound to process data only on our instructions. We disclose data if legally required.
Retention and deletion
Sensor readings are kept while your account is active so your history and trends work. Deleting a device deletes its readings; deleting your account deletes your personal data, keeping only order records we must retain for tax and accounting.
Your choices
You can export your readings (CSV, per device), edit or remove your card and address, disable any notification, and delete devices or your whole account — all from Settings. For anything else, email support@mysmartfilter.com.
Security
Data is encrypted in transit (TLS) and at rest. Devices authenticate with unique per-device tokens. Access to production systems is limited to the operator of the Service.
Changes
If we materially change this policy we'll email you before the change takes effect.