SiteList review score
Clear human-writing positioning and polished design. Improve mobile speed, pricing guidance, and the safeguards around hosted review content.
Reviewed on Sep 23, 2026
Sidelong
sidelong.app
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Claim itWhat it does
Sidelong is an intelligent writing platform that helps users collect research, save media, run deep research, draft content with AI assistance, and publish newsletters, books, and social posts.
Two ratings
Verified user rating
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Screenshots
Captured during our latest review on Sep 23, 2026
Pricing details
Free plan available. Paid plans are $9/month (Writer) and $29/month (Pro) billed monthly. Billed monthly. free trial (14 days) · 14-day free trial of all features, no credit card required.
| Plan | Price | Details |
|---|---|---|
| Free | $0 monthly | Write and publish, free forever. Unlimited drafts and projects · Unlimited publishes to your hosted blog · 500 newsletter subscribers · 14 day trial of everything View source |
| Writer | $9 monthly | Human writing + superpowers. 50 library saves a month · 100 advanced AI actions a month · 5 deep research reports a month · Chrome extension and MCP server access · 2,500 newsletter subscribers View source |
| Pro | $29 monthly | The best of everything, and room to run. Sidelong's most capable AI everywhere · 1,000 library saves a month · Unlimited AI actions · 25 deep research reports a month · Unlimited newsletter subscribers · Post and schedule directly to all your social platforms View source |
Key features
Deep Research
Research
Generates fully cited research reports from your saved library and open web sources.
Pro Editor
Writing
Distraction-free online editor with readability highlights, editing modes, and export options.
MCP Server
Integrations
Connects external AI assistants like Claude, ChatGPT, and Cursor to your Sidelong library.
Chrome Extension
Capture
One-click web extension to save, transcribe, summarize, and highlight articles, videos, podcasts, and PDFs.
Ask Sidelong
AI Assistant
AI chat assistant to review drafts, search evidence, research topics, and brainstorm ideas.
Who it’s for
Newsletter Writers
Gather sources throughout the week and publish newsletters directly or via Substack and Beehiiv.
Book Writers
Organize years of research, highlights, and notes into structured book chapters.
Social Writers
Draft and refine X threads, Substack Notes, and LinkedIn posts using your saved library.
Integrations
Claude
AI
Connect Claude via MCP to search your library and assist with drafts.
ChatGPT
AI
Connect ChatGPT via MCP to search your library and assist with drafts.
Cursor
AI
Connect Cursor via MCP to search your library and assist with drafts.
Substack
Publishing
Send or publish newsletters to Substack.
Beehiiv
Publishing
Send or publish newsletters to Beehiiv.
Buyer questions
Questions buyers actually ask
What happens when my trial ends?
You land on the Free plan. Drafts, projects, your published pages, and export keep working, and everything already in your library stays readable.
Product FAQ information · View source
The expert review
Sidelong scores 78/100, with clear human-writing positioning, strong design execution, and polished core copy. Its most material weaknesses are a 6.1-second mobile LCP, limited pricing decision support, and review-content integrity risks.
78/100: strong product with speed, decision-support, and trust gaps
Verified user reviews
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Scores across 13 dimensions
Brand & experience
Performance
Content & editorial
Trust & decision surfaces
Search & discoverability
Docs & measurement
- Domain
- sidelong.app
- Category
- Note-taking & knowledge management
- Pricing
- Freemium · $9–$29/mo
- Platforms
- web
- Founded
- 2026
- Last checked
- Sep 23, 2026
- Public dimensions
- 13
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