IELTS by IDP App vs OnePrep
| IELTS by IDP App | OnePrep | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | Yes | No |
| Paid from | Free | $148.30/mo |
| Open source | No | No |
| Platforms | Android, iOS | Android, iOS, macOS, Web |
| Free plan | Yes | Yes |
| Question bank | — | 4,000 questions |
| Full-length mock tests | — | Yes |
| Revision plans | — | Yes |
| Adaptive practice | — | Yes |
| Exam scope | — | multiple_exam_types |
| Platform support | — | Web, iOS, Android |
Both are listed in Best Exam Prep Apps. On Samsung Mobile US Press, OnePrep scores higher on our published basis.