Interactive Primer vs Synthesis Tutor
| Interactive Primer | Synthesis Tutor | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | Yes |
| Paid from | — | $2.08/mo |
| Open source | No | No |
| Platforms | Web | iOS, Web |
| Free plan | Yes | Yes |
| Adaptive learning | Yes | — |
| Guided lessons | Yes | — |
| Gamified practice | Yes | — |
| Offline access | Yes | — |
| Supported platforms | web | — |
| Paid from | — | $29/mo |
Both are listed in Best Math Learning Apps. On Samsung Mobile US Press, Synthesis Tutor scores higher on our published basis.