Fast Signal: Fasting & Health

Fast Signal connects your fasting, keto and training to the health data that actually matters: HRV, resting heart rate, VO2 max, cardio recovery, sleep and more. WHY FAST SIGNAL Most trackers show you numbers. Fast Signal reads your Apple Health data and connects it to your fasting windows, keto days and workouts, so you can see what is actually moving the needle, not just log another data point. SEE WHAT REALLY AFFECTS YOU Does a drink lower your HRV the next morning? Do long fasts change how you sleep? Fast Signal compares days in your own history and points out patterns that hold up, with the numbers behind them. A WEEKLY READ OF YOUR DATA Every week, Insights explains in plain language what changed, what stayed within your normal range, how you're doing on your goals, and one concrete suggestion for the week ahead. It accounts for real-life context such as illness, travel, altitude and weather, so a rough patch isn't mistaken for a bad trend. Your first weekly insight is free. THE FASTING TIMER, DONE RIGHT Start and end your fast with one tap, from the app or a Home Screen widget. Watch the ring fill in real time and track your fasting window and prolonged fasts automatically. TRACK WHAT MATTERS - Resting heart rate, HRV, walking heart rate, VO2 max, cardio recovery, sleep and sleeping wrist temperature (Apple Watch) - Weight, body fat %, lean mass and BMI - Runs and HIIT detected automatically, with interval and non-stop runs tracked separately - Keto days, meals, junk food, alcohol, caffeine timing, illness, travel and mood - Weather and altitude for every day - Weekly goals, and up to 3 favorite metrics pinned to Today ONLY CHANGES THAT MATTER Trends learns your usual range for each metric and only highlights a change when it's outside it. Normal ups and downs stay grey. LEARN AS YOU GO A built-in Learn tab covers the basics of intermittent fasting, keto and every metric Fast Signal tracks. START FREE Fasting timer, logging, trends and widgets are free. Your first weekly insight is free too; after that, Insights is available as a monthly or yearly subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/