Last updated: July 28, 2026
Know Your Coupons ("KYCs", "we", "us") is built by AddVector. This Privacy Policy explains what information we collect when you use knowyourcoupons.com and the KYCs Android app (together, the "Service"), why we collect it, and how you can control it.
Account information — your name, email address, and optionally your phone number, date of birth and country. If you sign in with Google, we receive your Google account's name, email and profile photo. Your password is never stored in plain text — only a one-way cryptographic hash.
Your coupon vault — the coupons you add manually, the content of coupon emails you forward to us, and any screenshots, PDFs or text you upload or paste. This is the core content of the Service and is only visible to you.
Usage and device information — sign-in history (device/browser, approximate location from IP address, timestamps), which you can review and revoke yourself under Profile > Security > Sessions & Devices. If you generate a developer API key, we store it as a one-way hash, the same way we store passwords.
Support communications — anything you send us through a support ticket or by email.
When you forward a coupon email to hello@knowyourcoupons.com from the address registered on your account, we match it to your account by the sender address and process the email body and any attachments (images, PDFs) to extract coupon details. Please only forward emails you have the right to share, and avoid forwarding threads that contain other people's personal information beyond what's needed for the coupon itself.
We use a single first-party session cookie to keep you signed in. It's marked HTTP-only and, in production, Secure. We don't use third-party advertising or tracking cookies.
We do not sell your personal information. We share it only with the service providers that make the Service work — for example, cloud hosting and outbound email delivery — under obligations to protect it, and only to the extent needed to provide the Service. We may also disclose information if required by law.
Passwords and API keys are stored as one-way hashes, never in plain text. All traffic between your device and our servers is encrypted in transit (HTTPS/TLS). No method of storage or transmission is 100% secure, but we work to protect your information using industry-standard practices.
We keep your account and vault data for as long as your account is active. From Profile > Security, "Delete Account" deactivates your account immediately and signs you out of every device. If you'd like your data fully and permanently erased rather than just deactivated, email hello@knowyourcoupons.com and we'll process the request.
You can access and correct most of your information directly from your Profile settings. To request a copy of your data, or its full deletion, email hello@knowyourcoupons.com.
The Service is not directed to, and we do not knowingly collect information from, children. If you believe a child has provided us with personal information, contact us and we'll remove it.
We may update this Privacy Policy from time to time. If we make material changes, we'll update the "Last updated" date above.
Questions about this policy? Email hello@knowyourcoupons.com or reach us through Support in your account.
