Waterfaster vs FastFlow

Water fasting and intermittent fasting, made clear — and no longer something you do alone. Start a fast with one tap and watch the live countdown on your Lock Screen, in the Dynamic Island and on your Home Screen widget. Follow what your body is doing hour by hour — fat burning, ketosis, cellular regeneration — based on published research. FAST TOGETHER — ANONYMOUS BY DESIGN • Live: see how many people are fasting with you right now • Your Circle: add friends with a simple code, follow their fast live, send boosts and friendly nudges • Groups & challenges: chase one goal together — from a 16:8 streak to a 7-day reset • No profiles, no photos, no feed of strangers. You appear under a generated water name unless you choose otherwise. YOU DECIDE WHO SEES YOU Share everything, hide from one specific friend, or go invisible completely. One tap, any time. NEVER LOSE YOUR PROGRESS Link Apple or Google and restore your history, stats and circle on any device. PICK YOUR PROTOCOL • Intermittent: 12:12, 14:10, 16:8, 18:6, 20:4 and OMAD • Water fasting: 24h, 36h, 48h, 72h, 4, 5 and 7 days • Flex: set or move your finish time while the fast is running ALSO INSIDE • Live Activity, Lock Screen and Home Screen widgets • Apple Health: steps, sleep, heart rate, weight and water • Hydration and electrolyte guidance during longer fasts • Streaks, trends and your full weight history • Personal insights and reminders you stay in control of Waterfaster is not medical advice. Talk to your doctor before longer fasts, and never fast on medication without medical guidance. — Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://waterfaster.app/terms Privacy Policy: https://waterfaster.app/privacy

FastFlow turns intermittent fasting into a guided, personalized journey — and it reads your Garmin's biometrics in real time so you can actually see your fast working. Connect a compatible Garmin watch and FastFlow maps your fast through six metabolic stages — Fed, Clearing, Shifting, Burning, Cleansing, Renewing — using your live heart rate, HRV, Body Battery, and stress. Instead of a plain timer, you see what's happening inside your body, and what to do at each stage. WHY FASTFLOW - Live biometrics, not just a clock. Your Garmin data drives the ring, so every stage is grounded in what your body is actually doing. - Know what to do, hour by hour. Each stage suggests the right activities — sleep through the early hours, deep work and fasted training in Burning, rest in the long stages. - A smart end-of-fast review. Log how the fast went in two taps; FastFlow reviews it against your own baseline, entirely on your device. - Break your fast the right way. A guided, step-by-step refeeding flow with gentle food suggestions — plus a shop for break-fast staples like bone broth and electrolytes. - Build the habit. Streaks, a color-coded calendar of your fasts, and per-stage insight. LIVE ACTIVITY + DYNAMIC ISLAND Track your fast from the Lock Screen and Dynamic Island — the stage and elapsed time stay current at a glance. PRIVATE BY DESIGN FastFlow has no account. Your fasting and health data is processed on your device and stored in your own private iCloud. We don't collect, sell, or share it. REQUIRES A GARMIN Live biometric sync requires a compatible Garmin watch with the FastFlow watch app (available on the Garmin Connect IQ Store). You can also use FastFlow phone-only: start/stop fasts, follow the stage journey, log break-fasts, and keep your history. FASTFLOW PREMIUM A subscription unlocks live Garmin biometric sync, full history and insights, and Live Activity. - Monthly and annual plans, with a free trial. - Payment is charged to your Apple ID at confirmation of purchase. - Subscriptions renew automatically unless turned off at least 24 hours before the end of the period. - Manage or cancel anytime in your App Store account settings. - Terms: https://fastflowapp.com/terms - Privacy: https://fastflowapp.com/privacy FastFlow is a general wellness and fasting-tracking app. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Any biometric data shown comes from your own consumer fitness wearable and is for general wellness information only. Always consult your doctor before making any medical decisions, starting a fast, or changing your health routine.