Hi! I understand that your SailFreeGPS app is showing a correct distance traveled, but the Speed Over Ground (SOG) is stuck at 0.0. Let’s work through this together—this behavior suggests the app is receiving location updates correctly to calculate distance but may not be calculating or displaying the speed properly.

First, a couple of quick questions to better pinpoint the problem:

1. Are you using your device's built-in GPS or any external GPS device connected to SailFreeGPS?
2. Have you noticed if SOG was ever showing correctly, or has it always been 0.0 since you started using the app?
3. Have you tried restarting the app or the device to see if SOG updates?
4. Is your SailFreeGPS app updated to the latest version available for Android 16?

Meanwhile, here are some step-by-step checks and fixes you can try:

1. Check GPS permissions: Ensure SailFreeGPS has full permission to access your device’s location. Go to Settings > Apps > SailFreeGPS > Permissions and verify Location is allowed.
2. Refresh GPS signal: Try toggling your location services off and on again to reset GPS data.
3. Reset distance and speed metrics: According to the app's guide, double-tapping the speed display should reset speed calculations - see if this wakes up the SOG display.
4. Calibration factor and data sources: Some users report that distance and speed depend on calibration settings if using an external sensor. If you are connected to such a device or AIS/speed log, check your sensor configurations in the app.
5. Close other apps using GPS: Sometimes other apps interfere with GPS data flow. Ensure no other GPS-intensive apps are running.
6. Update or reinstall the app: If none of the above work, ensure the app is updated from Google Play or try uninstalling and reinstalling it.

If you have tried these steps or need guidance on any, please let me know. Knowing about your setup and what you already tried will help me provide more targeted suggestions.

Are you satisfied with this initial approach so far?

Seems to work, except SOG is always 0.0 (while distance looks ok).

Thanks for repeating the issue about SOG showing 0.0 while distance looks correct. Let me clarify some steps based on what typically causes this situation in GPS apps like SailFreeGPS.

Usually, when distance updates but speed (SOG) stays zero, it points to the app receiving location fixes but not calculating speed from those fixes properly. Some apps calculate speed as the change in position over time, so if the timing or data update is off, speed might not update.

Here are focused steps you can try:

1. Check Location Update Interval:
Go to the app settings and see how frequently the GPS updates. If it's too slow or set incorrectly, speed might not refresh well. Try setting the frequency to a higher rate (e.g., every second).

2. Confirm GPS Mode:
Android 16 can have different location accuracy modes (High accuracy, Battery saving, Device only). For speed accuracy, ensure your device is using "High accuracy" mode under Settings > Location > Mode.

3. Reset App Data:
Sometimes cache or stored data causes display issues.
- Go to Settings > Apps > SailFreeGPS > Storage > Clear cache (and if needed Clear data—note this will reset your app settings).

4. Update the App:
Verify you are using the latest version available for your device. An update might have fixed related bugs.

5. Try a Simple GPS Test App:
To isolate if the problem is device or app-related, try a basic GPS test app that shows speed. If that app shows speed correctly, the issue is in SailFreeGPS; if not, GPS data or device settings might be the cause.

6. Ensure No External Sensors Misconfigured:
If SailFreeGPS is connected to any external speed sensors, that connection or calibration might interfere with displayed SOG.

If these tasks don’t resolve it, it might help to share if you have any specific external hardware or configurations.

Let me know what you’ve already tried or your app version, and I can help further!

Are you satisfied with this solution so far?

Why is SailFreeGPS showing 0.0 SOG?

Thanks for your question about why SailFreeGPS is showing 0.0 for Speed Over Ground (SOG) even though other data looks fine. Based on how SailFreeGPS works, here are some common reasons for that behavior:

- SailFreeGPS relies on your device’s GPS to provide location updates and calculates SOG based on changes in position over time. If the GPS speed data is missing or delayed, the app may display 0.0.
- The app may filter GPS signals to improve accuracy, and during weak GPS reception or stationary periods, it can report zero speed despite small position changes.
- If the device’s location mode isn’t set to “High accuracy,” speed calculations can be less precise or fail to update.
- External sensors or instruments connected to the app, if misconfigured or disconnected, may cause SOG to report zero.
- Sometimes app caching or settings glitches cause the SOG display to freeze or show zero incorrectly.

Typically, confirming your GPS is working correctly, ensuring high accuracy mode is enabled (under Android Settings > Location), and restarting the app or device helps resolve this. Checking for app updates or reinstalling can also clear out problems.

To dig a little deeper, can you tell me if your device’s location mode is set to High accuracy and whether you have any external sensors connected? Also, does SOG remain zero even after moving at a reasonable speed outdoors?

For more details about SailFreeGPS features, their app description mentions they do display SOG, COG, and other telemetry based on accurate GPS data1 4.

Let me know, and we can work on a precise fix together! Are you satisfied with this explanation so far?