Privacy policy
Last updated November 15, 2026
This policy explains what information WattWise Guide ("we") collects when you use this website, why, and your choices. We don't sell your personal information for money.
Information we collect
- Calculator inputs stay in your browser. We don't store the devices or numbers you enter.
- Outbound link clicks. When you click a "Check price" link, our server records a random click ID, the product and page, an approximate country and device type, the ad campaign that brought you (if any), and any Google Ads click identifier saved from your visit. We use this to count referrals and to match confirmed purchases reported by the affiliate network to the ads that led to them. We don't record your name, email or full IP address with these clicks.
- Contact form. If you message us, we store your name, email and message so we can reply.
- Hosting logs and analytics. Our host, Vercel, processes technical request data (such as IP address and user agent) to deliver and secure the site, and provides privacy-friendly, cookieless page-view analytics.
Cookies and similar technologies
| Name | Set by | Purpose | Duration |
|---|---|---|---|
| ww_gclid, ww_gbraid, ww_wbraid | WattWise Guide | Remember the Google Ads click that brought you here, for conversion measurement | 90 days |
| ww_cmp, ww_land | WattWise Guide | Campaign name and landing page for referral reporting | 90 days |
| Affiliate network cookies | Awin / retailer | Set on the retailer's site after you click, to credit the referral | Per the network (often 30 days) |
Sharing
We share limited data with service providers that help run the site: Vercel (hosting, analytics, storage), Google (advertising measurement) and affiliate networks such as Awin (referral tracking). We don't load Google advertising tags in your browser. Instead, if you arrived from a Google ad and click a retailer link, or a purchase is later credited to us, we send Google the related ad click identifier, the time and (for purchases) the commission value, so we can measure which ads are worth running. Under some U.S. state laws, this may count as "sharing" for advertising.
Your choices and U.S. state privacy rights
- Global Privacy Control: if your browser sends a GPC signal, we don't save ad click identifiers for your visit, so nothing about it is sent to Google. We treat it as an opt-out of sale or sharing.
- You can block or delete cookies in your browser settings.
- Depending on your state (for example California, Colorado, Connecticut, Virginia or Texas), you may have rights to access, delete or correct personal information and to opt out of sale, sharing or targeted advertising. Send requests through our contact form. We won't discriminate against you for exercising them.
Retention and security
We keep click records for up to 13 months and contact messages for up to 24 months, then delete them. Data is stored with access controls at our hosting provider.
Children
This site isn't directed to children under 13, and we don't knowingly collect their information.
Changes
We'll post any changes here and update the date above.