FeedOtter vs Substack
| FeedOtter | Substack | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Web | Web, iOS, Android |
| Free plan | No | Yes |
| Email send model | limited | — |
| API access | Yes | — |
Both are listed in Best Newsletter Platforms. On Samsung Mobile US Press, Substack scores higher on our published basis.