| Price from | Free | $8.99/mo |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| macOS | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| Plans published | 1 | 5 |
| Spec score · Language Immersion Apps | 8.0 (#9) | 8.0 (#10) |
| Audience | The maker says Aprelendo is especially useful for intermediate and advanced learners who feel stuck on a plateau. | The maker describes Gravity as intended for travelers, immigrants, expats, partners of native speakers, and students abroad. |
| Review | Saved vocabulary can be reviewed with classic flashcards or cloze cards. | The app provides spaced reviews and daily learning plans tailored to a learner’s progress. |
| Support | Users can contact support through a form, and the maker says the form stores IP and user-agent details for security reasons. | The maker directs users to email [email protected] for questions and feedback. |
