Requires a free Darby account at darbycoaching.com. Create one first; pairing the app with it takes a minute. Darby is an endurance coaching platform for runners, cyclists and swimmers: an AI coach that knows your training, and, if you have one, your human coach on the same plan. This app records your sessions and sends them straight to Darby, so the analysis is ready when you are. RECORD - Run, treadmill, bike, indoor bike and pool swim. - Every session is also saved as a normal activity on your device and syncs to Garmin Connect as usual. - A sensor check before you start: heart rate, power, cadence, speed, foot pod and GPS, each with its state. - Heart rate from a chest strap with the wrist as fallback: if the strap drops out, Darby switches to the wrist within seconds and goes back to the strap when it returns. - Pool swim with Swim and Rest: press LAP at the wall to switch between Swim (this interval's distance and pace) and Rest (rest time and when to leave). The device counts the lengths. - After Save, rate the session: effort (RPE 1 to 10) and how you felt (five faces). Your coach sees both. ON THE BIKE COMPUTER: GUIDED WORKOUTS - Today's planned workout in the glance and in the app: the steps, the targets in watts, the purpose of the session. - Ride it with Darby: step by step, 3-second power coloured against the target, time left in the step, the whole workout profile. - Indoors, Darby sets your smart trainer's target power (ERG over ANT+ FE-C), with -10 / +10, SLOPE and RES. - Or hand the workout to the device's own workout player. SYNC AND COACHING - Samples are sent to your Darby account while you train, through the Garmin Connect app on your phone. Phone out of reach? The session stays on the watch and uploads when the phone is back. - On darbycoaching.com: your calendar, Load, Fitness, Fatigue and Form, every session analysed, and an AI coach you can ask about your training. A human coach can follow and plan with you. PAIRING Open Darby: it shows a six-character code. Sign in at darbycoaching.com/pair and enter it. You never type a password on the watch. Without an account the app shows only the pairing screen. PERMISSIONS Darby uses the internet connection through your phone to send your sessions to your Darby account, and your sensors while a session runs. GPS is used only during an outdoor run or ride you start: never indoors, in the pool or in the background. You agree to this when you create your Darby account, and deleting a session on darbycoaching.com deletes its route. On the bike computer, your weight from your device profile sets the indoor speed estimate and stays on the device. Session data goes to Darby (RpR Consulting Oy), not to Garmin, and nowhere else. Darby is free during its beta. Support: [email protected] and darbycoaching.com/contact Privacy policy: darbycoaching.com/privacy

First release: run, treadmill, bike, indoor bike and pool swim recording with live sync to Darby; RPE and feeling after each session; guided workouts with smart trainer control on supported bike computers.