Pupil Core vs Retra
| Pupil Core | Retra | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | api, Linux, macOS, Windows | Android |
| Free plan | No | Yes |
| Input method | hardware | — |
| Study mode | live | — |
| Gaze visualizations | gaze circles, gaze crosses, gaze polylines, light points, fixation overlays, surface heatmaps | — |
| Export formats | MP4, CSV, NumPy, PNG, TLV | — |
| Supported platforms | Windows, macOS, Linux | — |
Both are listed in Best Eye Tracking Software. On Inferse, Pupil Core scores higher on our published basis.