ContentIn

ContentIn is a LinkedIn AI ghostwriter built specifically for founders, with the core goal of helping users publish LinkedIn content consistently and efficiently to build industry thought leadership. The product offers a 7-day free trial and claims that the first post can be completed in 10 minutes.

Main Capabilities

1. Personal Style Learning: ContentIn trains a personal writing model based on at least 20 of your existing LinkedIn posts, learning your hooks, sentence rhythm, and the topics you discuss often. Every time you keep, edit, or publish a draft, it is fed back to the model as a training signal, making subsequent drafts increasingly closer to your own tone.
2. AI Ghostwriting: You only need to provide the substance—a few topics, opinions, or stories—and the AI generates LinkedIn post drafts in your voice, which can be quickly edited and placed into the calendar. Most founders can schedule a full week of posts in one session.
3. End-to-End Publishing Management: The product integrates inspiration generation, draft writing, a content calendar, scheduled publishing, analytics, and more, with no need to copy and paste back and forth between chat windows, scheduling tools, and spreadsheets.
4. Inspiration and Topic Generation: It can generate inspiration from your own topics, saved notes, or pasted URLs, and save them in the inspiration manager. It also suggests topics and formats your audience is genuinely interested in based on your analytics data.
5. Content Repurposing: You can repurpose your best-performing posts by rewriting them from a new angle, keeping your content fresh.

How to Use

• Step One: Import your LinkedIn profile (public profile URL only), and ContentIn will learn your tone and topics.
• Step Two: Provide a few topics, opinions, or stories.
• Step Three: The AI ghostwriter generates drafts, and you make quick edits.
• Step Four: Schedule posts into the content calendar and publish them on schedule via the official LinkedIn API.

It takes about 20 minutes the first time to schedule your first week of posts. As a verified LinkedIn app, ContentIn connects via official OAuth, does not ask for your LinkedIn password, and you always control what is published.

Use Cases

• Founders, solo entrepreneurs, coaches, and consultants: those who know LinkedIn matters for their business pipeline but do not have the time or rhythm to sustainContinuing the post.
• Users who want to manage content for personal profiles and company pages (the Pro plan supports company pages).
• Ghostwriters or teams that need approval and review workflows (Ghostwriter / Agency plans).
• Content creators who want to use AI assistance while maintaining authenticity: the LinkedIn algorithm does not distinguish between human-written or AI-assisted content, as long as the post is high quality, has a strong angle, and drives engagement. ContentIn emphasizes that you provide the real substance, and AI handles the writing.

Plans and Limits

• Free trial: 7-day free trial, credit card required, 30-day refund on the first payment. No permanent free plan.
• Growth plan: $39/month, or $31/month when billed annually. Includes planning a week of content for you every Sunday (generating 2 posts based on your own materials), unlimited AI ghostwriting drafts (trained on your posts), unlimited scheduling via the official LinkedIn API (one personal profile), scheduled first comments, inspiration storage and content planning, AI inspiration generation (up to 50 inspirations per month), AI carousel creation (4 per month), AI image generation (20 per month), AI comment generation, style training, viral post library, uploading knowledge documents, repurposing top posts, quote card and static carousel designer, media library and GIF library, and a personal profile analytics dashboard.
• Pro plan: $59/month, or $48/month when billed annually. On top of all Growth features, adds a 3rd planned post each week, unlimited AI posts/inspirations/carousels (fair use), 100 AI images per month, custom AI instructions, company page management, lead analytics (ICP matching, audience conversion, CSV export), access to the founder/community WhatsApp group, and a Telegram bot (write and schedule anytime).
• Ghostwriter / Agency plan: For ghostwriters and teams, supports multiple LinkedIn profiles, team seats, approval and review workflows, custom integrations, and onboarding. Pricing is available on request.

Free Tools

ContentIn offers a free AI LinkedIn post generator with no login and no credit card required. It generates a first draft in about 10 seconds and can generate three personalized posts based on your LinkedIn profile, letting you experience tone matching before signing up.

Known Information and What Is Not Provided

The product supports content management for personal profiles and company pages, publishes via the official API, and supports scheduled first comments. Details such as the specific browsers supported, mobile apps, multilingual support, API documentation, and data storage policies are not yet provided in the materials.