Every mortgage calculator I could find couldn't answer most relevant questions. Is it better to put more down or invest the money? When is buying points worth it? Do mortgages affect your taxes? Are VA fees justified? So I put together https://realratecalculator.com/ to quickly find out.
Inspired by Adam Langley's pond, every few seconds it sends the exact same size encrypted data chunks to peers. Receiving or sending a message should have no impact on the metadata seen by a passive adversary.