Privacy Policy
Last updated: October 4, 2026
Your calculator inputs stay on your device
Every calculator on Mamisbudget runs entirely in your web browser using JavaScript. The numbers you enter: incomes, expenses, grocery spending: are processed locally on your device and are never transmitted to our servers, stored, or shared. We technically cannot see your inputs because they never reach us.
Information we do collect
We collect a minimal amount of technical information to operate and improve the site:
- Server logs: our hosting provider may log standard technical data such as IP addresses, browser type, and pages visited, used for security and reliability.
- Analytics: we may use privacy-respecting analytics to understand aggregate usage (e.g., which calculators are popular). This data is aggregated and not linked to individuals.
Cookies and advertising (Google AdSense)
At launch we plan to use Google AdSense to display ads, which keeps our calculators free. Google and its partners may use cookies to serve ads based on your prior visits to this and other sites.
- Google's use of advertising cookies enables it and its partners to serve ads based on your visit to our site and/or other sites on the Internet.
- You may opt out of personalized advertising by visiting Google Ads Settings.
- Alternatively, you can opt out of third-party vendors' use of cookies for personalized advertising at aboutads.info/choices.
For more detail, see Google's Privacy Policy and how Google uses data from partner sites.
Children's privacy
Mamisbudget is a general-audience site not directed at children under 13, and we do not knowingly collect personal information from children.
Data security and retention
Because calculator inputs never leave your device, there is nothing of yours for us to secure or retain on our servers. Server logs and aggregate analytics are retained only as long as needed for operations and security.
Changes to this policy
We may update this policy from time to time. Material changes will be reflected in the "Last updated" date above.
Contact
Questions about this policy? Email us at [email protected].