GRE POWERPREP vs Lockin
| GRE POWERPREP | Lockin | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | £2.99/mo |
| Open source | No | No |
| Platforms | macOS, Web, Windows | Android, iOS, Web |
| Free plan | Yes | Yes |
| Full-length mock tests | Yes | — |
| Exam scope | single_exam | multiple_exam_types |
| Platform support | Web, Windows, macOS | Web, iOS, Android |
| Adaptive practice | — | Yes |
Both are listed in Best Exam Prep Apps. On Inferse, GRE POWERPREP scores higher on our published basis.