# Fluid Loss Companion App

> Fluid Loss Companion App (iPhone/iPad app by Gregorio Fulginiti.)

- Source: https://appshunter.io/ios/app/fluid-loss-companion-app/id6752904636 (this page in markdown: same URL + `.md`)
- Developer: [Gregorio Fulginiti](https://appshunter.io/developer/1841667285)
- Category: Health & Fitness, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 46 MB
- Languages: American English
- Released: 2025-12-09
- Data updated: 2026-07-17
- User reviews in markdown: https://appshunter.io/ios/app/fluid-loss-companion-app/id6752904636/reviews.md

## What is 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.


## Version history (last 5 releases)

### 1.5 — 2026-07-14

You can now share your session recap stats. Use stock images or personalised background picture and upload to your favourite social apps.

### 1.4 — 2026-06-16

Analyse Past Activities!
Share your past running* or cycling activity through Strava to check your fluid loss chart and final value.

*Running personalised predictions require the new Garmin watch app

### 1.3 — 2026-05-19

Analyse Past Activities!
Share your past running* or cycling activity through Strava to check your fluid loss chart and final value.

*Running personalised predictions require the new Garmin watch app

### 1.2.5 — 2026-04-10

No user facing changes - added support for Garmin Watch App

### 1.2.2 — 2026-03-02

Added ability to enable/disable voice notifications through phone speaker or connected bluetooth audio devices for fluid loss values (at every value change).

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-17.*