Last updated: February 8, 2026
Chubby is a Monte Carlo financial planning simulator that runs inside ChatGPT and Claude. You describe a financial scenario in plain language, and the app runs a simulation and returns a range of outcomes. That's it.
None. Chubby does not collect, store, or persist any personal data. When you send a simulation request, the inputs are processed in memory by our server-side WASM engine and discarded immediately after results are returned. Nothing is written to a database, log file, or any persistent storage.
Specifically, Chubby does not collect or process:
Simulation inputs (age, income, spending, savings) are used for one purpose: to run a Monte Carlo simulation and return results. The inputs exist only in server memory for the duration of the request and are not retained afterward.
Result visualizations are delivered via fragment URLs — the part after the # symbol. Browsers never send URL fragments to servers. Your simulation data stays entirely in your browser.
Chubby does not share data with third parties. There is no data to share. We do not use advertising networks, analytics services, or data brokers.
Chubby has no user accounts, no login, and no authentication system. There are no sessions to manage and no profiles to delete.
To prevent abuse, our server applies rate limits using IP addresses. These addresses are held in memory only and are not logged or persisted.
Because Chubby stores no personal data, there is nothing to access, correct, export, or delete. If you have questions about this policy, contact us at privacy@chubby.fyi.
If we change this policy, we will update the date at the top of this page. Given that we collect no data, we do not anticipate material changes.
