Superhuman is paid, with no free tier. Zero is free, with no paid plan attached. Both are listed under Email, Scheduling & Tasks, so this is a like-for-like comparison. Neither is ranked above the other — Flocci carries no sponsored placement.
Superhuman is paid, with no free tier and is listed for the fastest AI email experience. Zero is free, with no paid plan attached and is listed for fully open-source (MIT license), self-hostable AI email client. Both sit in Email, Scheduling & Tasks.
Zero is the cheaper starting point: it is free, with no paid plan attached, while Superhuman is paid, with no free tier. Pricing tiers here come from the catalog, not from a promotional page.
Choose Superhuman if you need the fastest AI email experience; choose Zero if you need fully open-source (MIT license), self-hostable AI email client. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.
| Superhuman | Zero | |
|---|---|---|
| Pricing tier | Paid | Free |
| Free to start | No | Yes |
| Category | Productivity & Workflow | Productivity & Workflow |
| Type | Email, Scheduling & Tasks | Email, Scheduling & Tasks |
| Listed capabilities |
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| Tags | email, superhuman, fast, ai, inbox, trial | zero email, open source email ai, mail0, self hosted email client, ai inbox |
| Website | superhuman.com | 0.email |
| Full page | Superhuman details → | Zero details → |
| Alternatives | Superhuman alternatives → | Zero alternatives → |