Does the AI read my entries?

In Standard mode, yes, for each message. To understand a message, the AI has to read it. Your message and about a page of related context pass through our server to Cloudflare’s AI. If it needs more to get a message right, the AI can look things up in your history for that message: for example a whole earlier day with its spending, up to 20 matching entries from any dates, up to 15 expenses from a date range, or what Dayline knows about a person or place, over up to 5 AI calls. All of it is used for that request and discarded. AI day stories, if you turn them on, send the whole day’s log (with the day’s mood estimate, worked out on your device, if no mood was logged). AI week and month reviews, which you ask for on the Review screen when AI stories are on, send only that period’s totals and counts (money by category with the top merchants, mood, health, and habits with your repeating tasks’ names), the names of the people and places that came up most, and each day’s title and wins (which can name a person, a meal, a task or a plan), all worked out on your device: never the entries themselves. We don’t log or store any of it, and Cloudflare’s terms say it doesn’t train on it. This is a promise, not encryption. You choose Standard AI or On-device only when you set up Dayline (nothing is pre-selected), and can change it any time; until a device has recorded Standard AI on its sign-in, our server refuses its AI requests.

Prefer no AI? Choose On-device only in Settings › Privacy & security. Nothing leaves your device for an AI model: entries are read by Dayline’s built-in rules instead. The mode applies to your whole vault, so your other devices (and ones you add later) follow it too. Entries still sync encrypted. If you switch back to Standard later, entries you logged in this mode can be read as context for new messages.