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Supergrow vs AuthoredUp (2026): write it for me, or help me finish it?

Supergrow drafts LinkedIn posts in your voice; AuthoredUp is the best editor and analytics tool for posts you write yourself. Pricing, features and which to pick.

Updated 5 min readBy the LinkedIn AI Poster team

Short answer

Pick Supergrow ($39/mo) if starting the post is the hard part: it interviews you by voice and drafts in your style, with carousels. Pick AuthoredUp ($19.95/mo) if you write your own posts and want the best formatting, an exact 'see more' preview and deep analytics with full history import. AuthoredUp makes no visuals; Supergrow's analytics are light.

These two solve opposite ends of the same problem. Supergrow gets words onto the page. AuthoredUp makes the words you've written look right and tells you how they did.

Side by side

FeatureSupergrowAuthoredUp
Best forPeople who'd rather talk than type, and teams of colleagues postingPeople who write their own posts and want them formatted, previewed and measured
Starting price$39/mo$19.95/mo
AI writingYesCoauthor (beta), trained on your past posts
Writes from your own materialPer item: URL, YouTube, PDFNo
VisualsCarousels (and infographics per its help centre)None
SchedulingYesYes, plus reminders and a best-time heatmap
How it connects to LinkedInOfficial LinkedIn API and sign-in. No extension.Chrome extension in your own session. No engagement automation.
AnalyticsLightStrong, with full history import
TeamsStrong: per-member voice, approvals, leaderboards ($199 for 5)Business plan, billed per profile; managers free
Lead gen / outreachNoNo
Free trial7 daysFree trial, no card
AuthoredUp's homepage, October 2026
AuthoredUp's homepage, October 2026

Writing vs editing

Supergrow is a writer: PostCast (a 10-minute voice interview that becomes 3 to 5 posts), Content DNA, and a Post Score that rates performance and authenticity. AuthoredUp is the best LinkedIn editor we tested: rich formatting and an exact preview of where the "see more" fold falls on desktop and mobile.

Analytics

AuthoredUp wins clearly: it imports your full post history and measures saves and sends. Supergrow's analytics are light.

Price and terms

Supergrow Pro: $39/mo, 7-day trial. AuthoredUp Individual: $19.95/mo, free trial with no card, but no refunds. For teams, Supergrow Teams is $199 for five accounts; AuthoredUp Business is $14.95 per profile with a three-profile minimum.

Verdict

01

Supergrow

Best for People who'd rather talk than type, and teams of colleagues posting

From $39/mo
Supergrow website, October 2026

A voice-first AI writer. PostCast runs a short AI voice interview and turns your answers into posts, and Content DNA models how you write. Strong employee-advocacy features for teams.

Good

  • PostCast: a 10-minute AI voice interview that becomes 3 to 5 posts
  • Content DNA models your writing across five layers
  • Best employee-advocacy tooling on this list
  • A Post Score (since August 2026) rates performance and authenticity, with rewrites

Watch out

  • Output stops at text and carousels: no memes, stat graphics or long-form articles
  • Analytics are light
  • Thin review base: G2 4.4 from 14 reviews

Full Supergrow review · supergrow.ai

02

AuthoredUp

Best for People who write their own posts and want them formatted, previewed and measured

From $19.95/mo
AuthoredUp website, October 2026

A Chrome extension and web app that is the best LinkedIn post editor we tested: rich formatting, an exact "see more" preview on desktop and mobile, and cheap, deep analytics. An AI writer, Coauthor, is in beta.

Good

  • Best editor and preview: see exactly where the "see more" fold falls on desktop and mobile
  • Imports your full post history for analytics like saves and sends
  • Only free trial here that needs no credit card
  • Chrome Web Store 4.7 from 70 ratings, 30,000 users

Watch out

  • Creates no visuals: no carousels, infographics or images
  • Can't read your blog, videos or documents
  • Coauthor AI is still in beta and only learns from your past LinkedIn posts

Full AuthoredUp review · authoredup.com

Frequently asked questions

Is AuthoredUp an AI writer?

Mostly not. AuthoredUp is an editor, scheduler and analytics tool. Its AI writer, Coauthor, is in beta and learns only from your past LinkedIn posts.

Which has a free trial without a card?

AuthoredUp's free trial needs no card. Supergrow has a 7-day trial.

Can I use both?

Yes, and some people do: draft in Supergrow, then finish, preview and measure in AuthoredUp.