Letterbird vs Substack
| Letterbird | Substack | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Web | Web, iOS, Android |
| Free plan | Yes | Yes |
| Newsletter website | Yes | — |
| Custom domain | Yes | — |
| Paid subscriptions | Yes | — |
Both are listed in Best Newsletter Platforms. On Samsung Mobile US Press, Substack scores higher on our published basis.