Zernio was formerly Late (getlate.dev).
| PostBoost | Zernio | |
|---|---|---|
| Pricing | Free $0 (3 accounts, 3 queued posts) · Pro $29/mo (10 accounts, 1 member) · Pro Max $49/mo (30 accounts, 3 members) | Per account: 1–2 free, 3–10 $6, 11–100 $3, 101+ $1 (10 accounts = $48/mo) |
| Free tier | Yes: 3 accounts, 3 queued posts, full API, webhooks and MCP | Yes: 2 accounts with the full API |
| Networks | 12 | 15 social/messaging + 7 ad networks |
| SDKs | 9 + CLI (Python, PHP, Node.js, Go, Ruby, Java, C#, Rust, Bash CLI) | 8 + CLI |
| OpenAPI | Yes (OpenAPI 3) | Yes (OpenAPI 3.1) |
| MCP server | Hosted MCP on every plan; API token (Bearer) auth; OAuth coming | Hosted, OAuth 2.1 with PKCE, listed in the official MCP Registry (per Zernio docs) |
| Webhooks | Yes, every plan | Yes |
| n8n / Make / Zapier | HTTP request nodes (no native n8n/Make/Zapier app yet) | n8n, Make and Zapier listed as supported |
Pick Zernio if
You need ad networks or messaging channels, idempotency keys, or account counts that swing up and down.
Pick PostBoost if
You want flat monthly pricing, a team dashboard with approvals, and SSO without an enterprise contract.
Where PostBoost is weaker
- 12 networks. Postiz (30+), Upload-Post (22), Zernio (15 plus ad networks) and Ayrshare (14) cover more, including Telegram, Discord or WhatsApp.
- No native n8n, Make or Zapier app yet. You connect with an HTTP request node and an API token.
- MCP uses an API token (Bearer) today. OAuth sign-in for MCP clients is in progress.
- The Free plan holds 3 queued posts at a time. Paid plans have unlimited scheduled posts.
- First comments on Facebook Pages and Instagram are pending Meta's app review. See the network permissions status.
Sources
- https://zernio.com/pricing
- https://docs.zernio.com/
- https://docs.zernio.com/sdks
- PostBoost pricing and developer docs
See the full comparison with Ayrshare, Zernio, Postiz, Blotato, Upload-Post and Buffer.
Try PostBoost free
API, webhooks and MCP on every plan, including Free. No credit card required.