Privacy Policy
Your calculator inputs stay in your browser - we never upload the numbers you enter. Here's exactly what we do and don't collect.
Last updated: September 2026
The short version
- ▸ Your calculator inputs stay in your browser. We never collect the numbers you enter into any calculator.
- ▸ We use Google Analytics 4 to understand aggregate traffic. It is anonymised.
- ▸ We use Google AdSense to serve ads. Google sets cookies for this.
- ▸ We do not sell your data to anyone.
- ▸ You can opt out of analytics cookies at any time.
1. What we collect
Calculator inputs
All calculations run in your browser using JavaScript. The numbers you enter into calculators are never sent to our servers. We have no visibility into what you calculate.
Analytics data
We use Google Analytics 4 (GA4) to collect aggregate, anonymised data about how the site is used: pages visited, approximate location (country/city), device type, referral source and session duration. IP addresses are anonymised. We do not enable user-level tracking.
Contact form
If you contact us via the contact form or email, we collect only the information you provide (name, email address, message). We use this solely to respond to your enquiry.
Advertising
We use Google AdSense to display advertisements. Google may use cookies to serve ads based on your prior visits to this and other websites. You can opt out via Google's ad settings at adssettings.google.com.
2. How we use data
- ▸ To understand which pages and tools are used most, so we can improve them.
- ▸ To diagnose technical errors (via server logs).
- ▸ To respond to your messages if you contact us.
- ✗ We do not use data for targeted advertising beyond what Google AdSense does automatically.
- ✗ We do not sell or share your data with third parties for marketing.
3. Cookies
We use the following cookies:
| Cookie | Provider | Purpose |
|---|---|---|
| _ga, _ga_* | Google Analytics | Aggregate, anonymised usage analytics |
| IDE, DSID | Google Ads | Ad targeting and measurement (AdSense) |
| cm_cookie_consent | CoinMind | Remembers your cookie preference |
4. Third-party services
CoinMind uses the following third-party services, each governed by their own privacy policies:
- Google Analytics 4 - Google Privacy Policy
- Google AdSense - Google Privacy Policy
- Vercel (hosting) - Vercel Privacy Policy
5. Your rights
You can opt out of analytics cookies using our cookie consent banner. You can also opt out of personalised ads at adssettings.google.com.
For any privacy-related enquiry, email us at coinmindofficial@gmail.com.
6. Data retention
Google Analytics data is retained for 14 months by default. Contact form messages are retained for up to 1 year unless you request deletion.
7. Changes to this policy
Material changes will be noted at the top of this page with a new effective date. We will not reduce your rights without notice.