Privacy

Privacy Policy

Last updated: July 28, 2026

Stackyard is a Chrome extension operated by OneLonelyCow. It reads your card offers and deal listings and works out what's actually profitable. This page explains what it touches and what it never does.

It runs entirely in your browser. There is no account and no server. The only thing that ever leaves your computer is a Discord alert you choose to turn on, sent straight to a channel you control. We never see it.

What it reads

While you're signed into your own accounts, Stackyard reads three things off the page:

Card offers. The store name and reward amount from your card issuer's own offers page.
Deals. The item, price, commission, store, and quantity, from the buying groups you use.
Cashback rates. Public rate pages of well known cashback portals. No personal data travels with these requests.

We deliberately don't name the exact sites here. Which ones matters less than what's read from them, and this is a public page.

Everything is stored in your browser's local storage, on your device. It is never sent to us. Uninstalling the extension removes it.

What it never does

No passwordsYou sign in on each site the normal way. Nothing in Stackyard touches a login form.

No sellingYour information is never collected, sold, rented, or shared with anyone.

No other useIt exists to show you deals inside the extension, nothing else.

No trackingNo analytics, no ad tech, no record of your activity kept anywhere.

The one thing that leaves your browser

Turn on phone alerts and you provide your own Discord webhook. When a profitable deal appears, a short summary (item, profit, store, card, rate) goes straight there. Off by default, and we never receive a copy.

Permissions

Your card, deal, and cashback pages: so it can read the offers, deals, and rates above, and only on those sites.
Storage: to save your offers, deals, and settings, locally in your browser.
Notifications: to alert you when something stacks.
Tabs and scripting: to run the readers on the pages that need them.
Discord: requested only if you turn alerts on, so it can reach your own webhook.

Data retention

Everything lives in your browser until you clear it or uninstall the extension. There's nothing on our side to retain or delete.

Children

Stackyard is intended for adults managing their own rewards. It is not directed at children.

Changes to this policy

If this policy changes, we'll update the date at the top and post the current version on this page.

Contact

Questions about this policy: thestackyard@onelonelycow.com.