Fluid Loss Companion App

FluidLoss.info is the companion app for estimating sweat loss and guiding hydration during and after workouts. Pair it with the FluidLoss data-field on your Garmin device to get real-time fluid-loss estimates while you ride. How It Works Install the FluidLoss data-field on your Garmin device from the Connect IQ Store. During a workout, the data-field collects metrics—heart rate, duration, temperature, intensity—and sends them to the companion app. The app runs a machine-learning model to estimate how much fluid you're losing in real time. When you finish, you get a clear recap with a chart of fluid loss over time and key stats like duration, distance, and training effect. Key Features - Real-time fluid-loss estimates displayed on your Garmin and phone - Post-workout recaps with charts and summary stats - Personalised predictions that improve as you provide feedback Personalisation The base model works out of the box. After several sessions, you can provide actual fluid-loss measurements (weigh yourself before and after) to train a personalised model that accounts for your unique sweat rate. The more and better data you provide, the more accurate your estimates become. Importing Activities Already have Garmin activities? Share a Garmin Connect activity link to the app and provide the fluid loss for that session—no need to redo the workout. Requirements A Garmin Edge device that supports Connect IQ (Edge 840, 850, etc.) The FluidLoss data-field installed from the Connect IQ Store iOS 11 or later Privacy Refer to the full Privacy Policy for details. No account required. No ads.