Runna builds adaptive plans. GraviRun is a conversation that adapts everything.
| Feature | GraviRun | Runna |
|---|---|---|
| Core idea | AI coach you converse with | AI adaptive training plans |
| Interface | ChatGPT conversation | Mobile app |
| Plan adaptation | Conversational - tell it what changed Available | Algorithmic - adapts from sync data |
| Garmin sync | Connect your Garmin account - activities sync automatically Available | Available |
| Race distances | 5K to ultramarathon | 5K to marathon |
| Cost | No separate GraviRun charge during current access; ChatGPT account requirements apply. | $19.99/mo |
| Free-form questions | Yes - ask anything Available | No |
| Community | Planned Planned | Yes (Runna community) |
| Offline access | Yes (through ChatGPT) | Yes (app) |
| Recovery insights | HRV, sleep, training load Planned | Limited |
| Periodization | Base, build, peak, taper - explained Available | Automatic, not explained |
If you want a polished mobile app with automatic Garmin sync today, a structured plan that adapts based on your synced workout data, and a community of other runners - Runna is a strong choice. It's a product that works out of the box.
If you want to actually talk to your coach - ask "why am I doing this workout?", explain that you're traveling, discuss a niggle in your knee - GraviRun is built for conversation. Runna adapts your plan algorithmically; GraviRun adapts it conversationally, and explains the reasoning. Connect your Garmin account and your activities sync in automatically through GraviRun's existing integration, so the conversation starts from your data - not a blank page.