Feever operates on a strict "Ephemeral by Default" model. We do not store your data unless you explicitly choose to contribute to our community research.
If you simply upload a bill to get an analysis:
Checking the "Contribute to Feever" box is the specific action that overrides the default ephemeral behavior.
When you opt-in:
Even in the donation flow, our system is designed to "forget" the link between you and the data. Once the PII is stripped and the pricing data is extracted, the original image is deleted. There is no way to reverse-engineer who uploaded the bill.