Last updated: November 7, 2026
ChargeGuardian never collects or stores your card numbers, bank details or passwords.
What stays on your device
- The text of the pages you visit is analyzed in your browser to find payment buttons and subscription terms. It is never sent to us.
- Your settings, trusted merchants and (in family mode) the parent PIN are stored in your browser's extension storage. Chrome may sync settings across your devices if you use Chrome sync.
- The family PIN (stored as a salted hash) and family settings stay on the device and are never synced.
What leaves your device
Free features send nothing to us. The optional features below do:
- Pro license check. When you enter or re-check a license key, the key is sent to our license server (cg-license-api.vercel.app), which verifies it with our payment provider, Whop. Nothing else is sent.
- Pro domain-age check. The hostname of the site you are on (not the full address, not page content) is looked up in public domain registries (RDAP).
- Pro alerts (optional, off by default). If you turn alerts on, then when a purchase triggers a warning we send the contact you chose, the site name and the purchase amount to our server and to our messaging provider (WhatsApp, SMS or email) to deliver the alert. We keep this only as long as needed to deliver it and for abuse prevention, up to 30 days. You can turn alerts off or delete your contact at any time in the extension.
- Free "message a parent" option. If a child taps "Message a parent," a pre-filled message with the amount and the site name opens in their own WhatsApp, SMS or email app. No card data is included and nothing passes through ChargeGuardian servers. The message is built on your device and you send it yourself from your own app.
Our hosting provider may log IP addresses for security. We do not sell your data, share it for advertising, or use it to build profiles.
What we never collect
Card numbers, bank account details, passwords, or the contents of the pages you visit.
Analytics and trackers
We do not run analytics, advertising pixels, chat widgets or social trackers on chargeguardian.io or inside the extension.
Families and children
ChargeGuardian is meant to be installed by an adult, including a parent setting up a child's computer. We do not knowingly collect personal information from children. There are no accounts, and nothing is collected from the person browsing, adult or child. In family mode, alerts go only to the parent contact the adult entered.
Deletion
Uninstall the extension to remove local data. To delete alert data held by us, email support@chargeguardian.io.
Contact
support@chargeguardian.io