Get Started with FatigueSense
Everything you need to download the app, connect your wearable, and start tracking your fatigue — from setup to daily use.
1
Creating Your Account
1
When you first open FatigueSense, you will be guided through a short sign-up process. Take your time — the information you provide helps FatigueSense build an accurate personal model from day one.
1
Create your account
Enter your name, email address, and a password (minimum 8 characters).
2
Tell us about yourself
Select your age group and sex. This helps calibrate predictions.
3
Set your fatigue context
Tell us about your fatigue background and any conditions you want to mention. This helps tailor setup, but it is not used for medical screening or diagnosis.
4
Choose your goals
Options include managing daily energy, returning to work or study, exercising without crashing, improving sleep quality, and more.
5
Select your wearable device
Choose which smartwatch or fitness tracker you use, or select "No Smartwatch" if you do not have one. The app will guide you through connecting it.
6
Enable notifications
Allow notifications so FatigueSense can remind you about check-ins and alert you about your activity.
7
Review & agree to terms
Read through our Terms & Conditions (covering data collection, privacy, research use, and your rights) and agree to proceed.
2
Connecting Your Wearable Device
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FatigueSense works best when it can read health data from your wearable device. The setup process depends on your device and phone platform. Expand the section that matches your device below.
If you use an Apple Watch, or any wearable that syncs to Apple Health (Oura, WHOOP, Polar, Withings, Garmin, or Huawei), FatigueSense reads your data through Apple HealthKit.
What you need to do:
1.
Make sure your wearable's companion app (e.g. Garmin Connect, Oura, WHOOP) is installed on your iPhone and syncing data to Apple Health. Verify in iPhone Settings → Health → Data Access & Devices.
2.
When FatigueSense asks for HealthKit permissions during setup, grant access to all requested categories (steps, heart rate, sleep, HRV, etc.).
3.
That's it. FatigueSense will automatically read your health data from HealthKit each day.
Important
FatigueSense filters data to only read from your specific wearable. Make sure your wearable app is the one writing data to Apple Health — otherwise the app may not see your metrics.
If you use a Samsung Galaxy Watch, Amazfit, Xiaomi, Zepp, WHOOP, Oura, Polar, or Withings on Android, FatigueSense reads data through Health Connect.
What you need to do:
1.
Download Health Connect from the Google Play Store if it is not already installed (it comes pre-installed on Android 14 and above).
2.
Open your wearable's companion app (e.g. Samsung Health, Zepp, Oura) and ensure it is connected to Health Connect. Check in Health Connect → App permissions.
3.
When FatigueSense requests Health Connect permissions, grant access to all requested data types (steps, heart rate, sleep sessions, HRV, calories, exercise).
4.
FatigueSense will then read your health data from Health Connect automatically.
If permissions are incomplete
If you see a "Grant Permissions" banner on the Data screen, tap it to complete the permission setup. FatigueSense needs access to all data types for the best predictions.
If you use a Fitbit device or a Google Pixel Watch, FatigueSense connects directly to your Fitbit account to retrieve your health data securely.
What you need to do:
1.
During setup (or later from the Data screen), tap "Connect Fitbit".
2.
You will be taken to the Fitbit login page in your browser. Sign in with your Fitbit account credentials.
3.
Fitbit will ask you to authorise FatigueSense to read your health data. Grant access to all requested categories.
4.
You will be redirected back to FatigueSense automatically. Your data will begin syncing.
How it works
FatigueSense uses secure OAuth2 authentication. We never see or store your Fitbit password. The connection allows us to read your health metrics — heart rate, steps, sleep, HRV — directly from Fitbit's servers.
If you use a Garmin device, FatigueSense connects directly to your Garmin Connect account.
What you need to do:
1.
Make sure your Garmin watch is syncing to the Garmin Connect app on your phone.
2.
In FatigueSense, tap "Connect Garmin" (shown during setup or on the Data screen if no data is found).
3.
You will be taken to the Garmin Connect login page. Sign in with your Garmin credentials.
4.
Authorise FatigueSense to access your health and fitness data.
5.
You will be redirected back to FatigueSense. Your Garmin data (heart rate, steps, sleep, HRV, stress, and more) will begin syncing automatically.
How it works
Like Fitbit, we use secure OAuth2 authentication. We never see your Garmin password. Once connected, Garmin sends your health data to our servers automatically, so your daily metrics are always up to date.
Supported Wearables at a Glance
| Device | Connection Method | Platform |
|---|---|---|
| Apple Watch | Apple HealthKit | iOS |
| Fitbit / Google Pixel Watch | Fitbit OAuth (direct) | iOS & Android |
| Garmin | Garmin OAuth (direct) | iOS & Android |
| Samsung Galaxy Watch | Health Connect | Android |
| Amazfit / Zepp | Health Connect | Android |
| WHOOP | Health Connect / HealthKit | Both |
| Oura Ring | Health Connect / HealthKit | Both |
| Polar | Health Connect / HealthKit | Both |
| Withings | Health Connect / HealthKit | Both |
| Xiaomi / Mi Band | Health Connect | Android |
| Huawei | HealthKit | iOS |
3
Using FatigueSense Without a Smartwatch
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You do not need a smartwatch to use FatigueSense. The app is fully functional for users who do not own a wearable, or whose wearable is not currently supported.
On iPhone
FatigueSense will automatically read your step count and active minutes from your iPhone's built-in motion sensors (via HealthKit). You will only need to manually enter sleep, resting heart rate, and HRV.
On Android
If you have a Samsung phone, steps and active minutes can be read from Health Connect. On other Android phones, you will enter all metrics manually each day.
Daily Manual Entry
Each day you will see a "Daily Entry" button on the Data tab. Tap it to log: sleep duration, steps taken, active minutes, resting heart rate, and Heart Rate Variability (HRV) — if you know it.
Good to know
Even without a wearable, FatigueSense can still generate meaningful fatigue predictions and pacing recommendations using your self-reported data and assessments. The more consistently you log, the better your insights will be.
Tips for Getting the Most Out of FatigueSense
A few habits that make a real difference.
Complete check-ins consistently
The more regularly you log, the faster the app builds an accurate personal model. Even a 30-second check-in each day helps.
Be honest in your ratings
The app learns from your self-reported fatigue. Accurate ratings — even on bad days — lead to better predictions.
Give the learning period time
The app needs around 2 weeks of data before predictions become meaningful. Insights improve significantly after 4–6 weeks.
Check the Data tab regularly
The Data tab shows what FatigueSense is reading from your wearable. If something looks wrong, it may need a permission fix.
Use Activity Pacing as a guide
The pacing recommendations are based on your trends, not a fixed rule. Treat them as a starting point alongside your own judgment.
Ready to start?
Download FatigueSense on iOS or Android. Free to download from the App Store or Google Play.
Questions? Contact us