The key is stored only in this browser (localStorage) and sent only to api.anthropic.com. The AI pass fixes spelling, grammar, run-on sentences, dialogue quoting, and speaker paragraphing — never your meaning, pace, or voice. Each fix costs a fraction of a cent.

Exports everything above — including your API key in plain text — as freeflow-settings.json. Keep the file private.

Saves a copy of the app itself — put it on another machine or server, then import your settings file there.