Feel First: HRV vs How I Feel

How do you feel before you look at your watch? Feel First keeps today's numbers hidden until you check in. Compare each signal with your own baseline, without a combined score. Personal calibration explores how each signal relates to your feelings, and a journal gathers days when they differ. You can also use it without a watch. No ads, no account.

• Choose how you feel from five levels, then reveal today's numbers. Your first choice is kept for personal calibration, even if you edit it later.
• Read sleep duration, resting heart rate and HRV through Health Connect, with your permission. Available data depends on the connected apps; missing readings stay missing.
• Without Pro: daily check-ins, today's signals, the latest 14 days of history and JSON journal backup and restore. Without a watch, add sleep duration by hand.
• Keep tags and notes on days when feelings and signals differ. Explore example data separately from your own journal.
• Pro adds personal calibration for each signal after at least 14 paired days, older history, 30/90-day graphs, tag analysis and CSV journal export. Health Connect readings are not included in JSON or CSV exports.
• Optional morning reminders help you check in before seeing the numbers. Pro offers a one-time lifetime purchase or a monthly subscription.

Not a medical device or medical advice. For health concerns, consult a healthcare professional.