IELTS by IDP App vs Testbook
| IELTS by IDP App | Testbook | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | Yes | No |
| Paid from | Free | ₹62.42/mo |
| Open source | No | No |
| Platforms | Android, iOS | Android, Web |
| Free plan | Yes | Yes |
| Full-length mock tests | — | Yes |
| Revision plans | — | Yes |
| Adaptive practice | — | Yes |
| Exam scope | — | multiple_exam_types |
| Platform support | — | Web and Android |
Both are listed in Best Exam Prep Apps. On Samsung Mobile US Press, Testbook scores higher on our published basis.