Privacy Policy

What this site does

MIRPG Optimizer is a free damage calculator for MapleStory: Idle RPG. It does not require an account and does not collect personal information.

Data stored on your device

All calculator data (class, equipment, stats, weapons, companions, artifacts, and ability presets) is saved to your browser's localStorage. This data never leaves your device unless you explicitly export it using the Copy button. A theme preference (light/dark mode) is also stored in localStorage.

You can clear all stored data at any time through your browser's site data settings.

Data sent to the server

When you use the calculator, your in-game stats are sent to server-side functions to perform damage calculations. These requests are processed and discarded immediately — nothing is logged or stored.

Advertising and cookies

This site displays ads through Google AdSense. Google and its advertising partners may use cookies to serve personalized ads based on your browsing history. You can opt out of personalized advertising at Google Ads Settings. For more information, see how Google uses advertising cookies.

Product analytics

This site uses PostHog to see which features are used and where users run into friction, so the app can be improved over time. Events include page views, feature interactions, and signup or subscription milestones.

No personally identifiable information is collected. If you are signed in, events are tied to your account ID; otherwise an anonymous device ID is used. Requests are routed through this site's own domain, and your browser's Do Not Track setting is respected. Analytics data is processed by PostHog in the United States.

Third-party services

This site loads icon assets from jsDelivr (a public CDN). No social media tracking pixels are used.

Changes to this policy

If this policy changes, the updated version will be posted on this page with a revised date.

Contact

If you have questions about this policy, you can reach me at ko-fi.com/mirpgoptimizer.