Once Sport vs Roboflow
| Once Sport | Roboflow | |
|---|---|---|
| Free plan | Yes | |
| Free trial | Yes | |
| Paid from | $39/mo | |
| Platforms | Linux, macOS, Web, Windows | Android, api, iOS, self-hosted, Web |
| Free plan | No | Yes |
| Frame-accurate marking | Yes | |
| Drawing annotations | Yes | |
| Custom labels or fields | Yes | |
| Dataset export | Yes | JSON, XML, CSV, TXT, and 30+ additional formats |
| Paid from | 79 /mo | |
| Model-assisted labeling | Yes | |
| API access | Yes | |
| Annotation types | bounding boxes, polygons, segmentation masks, classification labels, keypoints | |
| Image formats | JPG, PNG, WEBP, AVIF, BMP | |
| Team collaboration | Yes |
Listed together in Best Video Annotation Software