Archived comparison
Gneta is no longer an alternative to Strava.
The Gneta app has shut down, so a feature-by-feature sales comparison would be misleading. This page now points to the useful work that remains.
Strava remains an active social and activity platform. Gneta now focuses on public endurance research and tools.
The short answer
If you need an active training platform, choose an active product. Gneta is now a free research and tools publication.
Why the app shut downStill useful