Flymagotchi.

Privacy policy · last updated 12 September 2026

Flymagotchi collects nothing

The extension and this website do not collect, transmit, sell or share any personal data. There is no analytics, no tracking, no account, and no server that receives anything from you. The simulation runs entirely inside your browser.

What is stored, and where

The extension keeps four values in your browser's local extension storage, on your own device:

  • a random seed generated when you install it, which decides which 40 neurons are silenced in your fly;
  • the time it was created, to show its age;
  • the time it last ate, to advance the hunger clock;
  • a count of meals.

None of it leaves your device. None of it identifies you. Uninstalling the extension deletes all of it. This website stores one similar value, a seed, in your browser's local storage so your fly stays the same between visits.

Network requests

The extension makes no network requests at all. Everything it needs — the connectome data, the simulator and the artwork — ships inside the package and is read from disk. There is no remote code: nothing is fetched and executed from anywhere.

Permissions, and why each one exists

  • storage — to keep the four values above.
  • sidePanel — the pet lives in the side panel; that is the interface.
  • activeTab and scripting — used only when you press Let it out on the web, to draw the fly on top of the tab you are looking at.
  • access to websites (*://*/*) — optional, never requested at install. Chrome asks for it at the moment you press that button, and Bring it back revokes it. It is used only to draw the fly over the page. The extension does not read, store or transmit the content of any page you visit.

Children

The extension is not directed at children and collects no data from anyone, of any age.

Changes

If this policy ever changes, the new version will be published at this address with a new date. The source is public, so any change in behaviour is visible in the commit history: github.com/cryptoghost1ng/Flymagotchi.

Contact

Open an issue on the repository above.