About Chat33
Chat33 turns Instagram and Facebook comments into conversations. Someone comments your keyword, and your reply with the link lands in their DMs within seconds. The same app publishes your posts to Instagram, Facebook, TikTok, YouTube, X, LinkedIn and Bluesky from one calendar.
Chat33 is made by Nitrotech Inc., a software company that builds consumer apps and tools for creators and small businesses.
Built on Meta's official API
Chat33 is an approved Meta Tech Provider. Every message goes out through Meta's official Instagram and Facebook APIs, after the permissions passed Meta's App Review. You connect your account by logging in through Meta, so Chat33 never sees your password, and you can remove its access from your Meta settings at any time.
Posting to TikTok, YouTube, X, LinkedIn and Bluesky also runs on each platform's official API. DM automation exists only for Instagram and Facebook, because those are the platforms whose APIs allow it.
How we build
- Official platform APIs only. No browser bots, no password logins.
- We say what the product does not do. There is no new-follower trigger, because Meta offers no public API for it, and WhatsApp is not live yet.
- A free plan that is actually usable: one channel, three flows, no credit card.
- Open to developers and AI agents: a REST API, webhooks, an n8n node and an MCP server for Claude, ChatGPT, Cursor and Codex.
Founder
Nemanja Divjak founded Chat33 and leads Nitrotech. He has built software for more than 25 years. He built Chat33 himself and took it through Meta's App Review to become an approved Meta Tech Provider.
He writes the guides on the Chat33 blog about comment-to-DM, DM scripts and the platform rules, and publishes them on LinkedIn.
Get in touch
Questions about the product, a partnership or press: use the contact page.