Proactive check-ins
Once a day at most, FeelAI checks in. The hour is not random: it looks at when your own logged moods tend to dip and reaches you shortly before. The message references something specific it knows, a goal, a pattern, a recent mood, and ends with a gentle question. Reply in a sentence and it extracts what helped, what triggered you or how a goal is going, and adds it to your memory. Ignore it and nothing happens.
The monthly letter
On your rolling 30-day cycle, FeelAI writes you a letter: two or three short paragraphs, under 180 words, quoting your own notes where it helps. Everyone gets one. The Premium letter also draws on your memory profile and your check-in replies, and uses a stronger model, so it can name what shifted against what it knows about you rather than against a blank page.
Boundaries, in writing
FeelAI is bound by a constitution. It never uses medical language, never gives instructions, never creates dependency, never mentions how often you log. If it notices you leaning on it too heavily, it steps back and encourages real-world contact. Check-ins and letters are part of Premium, with a 3-day free trial.