Privacy Policy

Last updated: June 10, 2026

The short version

Crimson runs entirely in your browser. The devices you add, their costs, and their dates are stored in your browser's local storage on your own machine. We do not have a server that receives, stores, or processes your fleet data, and we cannot see it.

What we collect

• Fleet data you enter (models, quantities, costs, dates) — stored only in your browser's local storage. It never leaves your device unless you export it yourself.
• Standard server logs — our hosting provider (Cloudflare) may log IP addresses and request metadata to serve the site and protect it from abuse, per their own policies.
• Fonts — pages load fonts from Google Fonts, which receives your IP address as part of serving those files.

We use no analytics, no advertising trackers, and no cookies of our own.

How to delete your data

Use the "Clear all" button in the app, or clear this site's data in your browser settings. Because we hold no copy, deletion on your device is complete deletion.

Changes

If this policy changes, we will update this page and the date above.

Contact

Questions? Email [email protected].