If the GHIN app won’t load on your Apple Watch and is stuck with a spinning install icon, this is a known problem that can occur after app updates or with certain sync issues147. Here are the most effective troubleshooting steps, based on official resources and common resolutions for Apple Watch app installation issues:

1. Check Apple Watch Storage and Compatibility
- Make sure your Apple Watch has enough free storage.
- Ensure your watch is running the latest version of watchOS3.

2. Install the GHIN App Correctly
- On your iPhone, open the Watch app.
- In the “My Watch” tab, scroll down to the list of available apps.
- If GHIN appears under “Available Apps,” tap “Install”47.

3. Restart Devices
- Restart both your iPhone and Apple Watch. This can clear temporary glitches during app installation3.

4. Check Connection and Sync
- Make sure your iPhone and Apple Watch are paired and within Bluetooth range.
- Confirm both devices are connected to a strong Wi-Fi or cellular network3.

5. Reset Sync Data
If the app still will not install or stays spinning:
- Open the Watch app on your iPhone.
- Go to General > Reset.
- Tap “Reset Sync Data.” This will force your devices to re-sync, which often resolves stuck installations47.

6. Pause and Retry App Download
- If the app is still spinning, tap to pause the install, then tap again to retry. Sometimes this will force the installation to continue6.

7. Close Other Apps and Enable Auto-Lock
- Having multiple apps open or auto-lock disabled on your phone can interfere with installation. Close other open apps and check your auto-lock settings7.

8. Ensure iCloud and Permissions Are Set Properly
- Check iCloud storage and make sure there's enough space.
- Ensure all necessary permissions, especially for Bluetooth and location, are granted to both the GHIN app and the Watch app65.

If Problems Persist
- Some users have reported ongoing issues after certain app upgrades, which may require waiting for a further app update or contacting GHIN/USGA support1.
- As a last resort, un-pair and re-pair your Apple Watch with your iPhone. This resets all watch app installations but can resolve persistent app issues3.

These steps address the most common causes of “spinning install” problems for apps on Apple Watch, including the GHIN app. If none of these actions work, it may be an issue with the most recent version of the GHIN app and you should notify GHIN support or monitor for future updates1.