| Price from | $3.33/mo | — |
| Free plan | — | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | — | Yes |
| Plans published | 2 | 7 |
| Spec score · Language learning apps | 8.0 (#132) | 9.3 (#3) |
| Free plan | Yes | Yes |
| Languages offered | 1 | 25 |
| Mobile apps | Yes | Yes |
| Offline lessons | Yes | Yes |
| Personalized review | Yes | Yes |
| Spaced repetition | Its SRS schedules reviews adaptively, showing difficult cards more often and familiar cards less often. | The scheduling algorithm selects individualized review intervals from a learner’s recall results and history. |
| Speech practice | No | Yes |
| Support | Support is available at [email protected]; the help page says typical replies take 24–48 hours. | Technical support is offered through a contact form and support email, with in-course problem reporting available. |
