If you are encountering an issue that GPX Viewer PRO shows incorrect elevation when following GPS track recording, please follow step-by-step instructions below.

1. Open left main menu in GPX Viewer PRO.
2. Tap on Settings button.
3. Tap on GPS button.
4. Disable option Elevation from air pressure.

Below is a video showing the instructions above:

If this doesn't solve your problem, please create a ticket at our support system https://support.vecturagames.com/gpxviewer.