FastFlow press & media kit

FastFlow is the fasting app that reads your Garmin and Apple Watch in real time — and coaches you through every metabolic stage.

FastFlow is an intermittent-fasting app for iPhone and Garmin that reads live biometrics — heart rate, HRV, Body Battery, stress — and maps your fast through six metabolic stages. An on-device AI Coach compares each fast to your own baseline, and a guided break-fast flow helps you refeed well. No account; data stays on your device.

Most fasting apps are timers. FastFlow is different: it connects to your Garmin or Apple Watch and reads your biometrics in real time, so a fast becomes a guided journey through six metabolic stages — Fed, Clearing, Shifting, Burning, Cleansing, and Renewing — rather than a countdown. Live heart rate, HRV, Body Battery and stress drive a glowing progress ring and tell you what's happening inside your body and what to do with each stage.

An on-device AI Coach reviews every fast against your personal baseline, and a guided break-fast flow helps you refeed well. FastFlow has no account and no servers — all health data is processed on your device and stored in your private iCloud. Made by DaSecure.

About DaSecure. DaSecure builds intelligent, user-friendly, privacy-first software. FastFlow, its intermittent-fasting companion for iPhone and Garmin, brings live wearable biometrics and on-device AI coaching to fasting — with a design principle that a person's health data should never have to leave their own device. Learn more at dasecure.com.

"I built FastFlow because my Garmin knew more about my fast than my fasting app did. Your watch is already recording heart rate, HRV and recovery — the story of what's happening inside you. FastFlow reads that story in real time and keeps it entirely on your device. No account, no servers, no one else's eyes on your health."

— Vincent, Founder, DaSecure

FastFlow provides general wellness information, not medical advice, and is designed around consistent, sustainable fasting — it does not encourage extreme or unhealthy fasting. Fasting isn't appropriate for everyone, including people who are pregnant, under 18, have a history of disordered eating, or manage a medical condition. We ask that coverage reflect this framing.