ContentIn, from ContentIn LLC, is an AI writing tool built around one LinkedIn profile rather than a generic prompt box. A new user hands over a LinkedIn profile URL, and the tool reads that profile and past posts to start learning the person’s voice and recurring topics before the first draft is written. A short guided interview then fills in a knowledge base of what the founder is building, who they are speaking to and the stories only they can tell, with room to add documents, links and voice notes later. From there, a user dumps the events, wins and half-formed thoughts from their week and gets back a full week of scheduled posts in that voice, and the site says every edit and every published post feeds back in, so drafts are meant to keep sharpening the longer the tool is used. Free tools on the site include a post generator, a carousel generator, a post humaniser and a scheduler, and it lists an MCP server for connecting the tool to other AI systems.
The core claim, that the model improves with use rather than staying generic, is a reasonable design goal for a personal ghostwriter, but it is still the vendor’s own framing, and the ‘200k+ LinkedIn posts analysed’ figure on the homepage is unverified. A tool that posts under a founder’s name carries real reputational risk if a draft goes out unreviewed, so treat the schedule-and-publish step as a place to read before it goes live rather than a fully hands-off pipeline, particularly early on before the model has learned much about the account.
The core plan is $39 a month, with a 7-day free trial and a first post promised within about 10 to 20 minutes of starting. An Agency or higher-volume plan is available by contacting the team directly rather than through self-serve checkout.
