Winnow
Chrome extension that scores X posts as you scroll and highlights the ones worth replying to
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What is Winnow?
Winnow is a Chrome extension that scores X (Twitter) posts in real-time as you scroll, highlighting the most valuable ones to reply to based on freshness, available engagement capacity, and keyword relevance. It helps users maximize reach by targeting posts with the best reply-to-follower conversion timing, using transparent local arithmetic instead of AI.
Winnow pricing
Pricing model: Freemium
Free tier: unlimited scanning, 5 hits/day, no account required. Paid: $23.20 one-time purchase for unlimited highlights. Launch discount LAUNCH20 applied automatically for first 50 buyers.
Winnow pros
- Privacy-first design: runs entirely in your browser, no login/OAuth required, no data tracking
- Transparent, deterministic scoring algorithm—same post always gets same score, works offline
- Free tier available with unlimited scanning and 5 daily highlights
- Read-only tool that never automates posting, replies, or engagement on your behalf
- Instant scoring with clear visual feedback—green edges and hover tooltips explain why each post ranked
Winnow cons
- Chrome extension only—not available for Firefox, Safari, or other browsers
- Free tier limited to 5 daily highlights; paid license required for unlimited
- Requires manual configuration of keywords and profile selection to work effectively
- Depends on X's public data rendering (view counts sometimes unavailable, which drops that signal from scoring)
Frequently asked questions about Winnow
Does Winnow use AI?
No. Winnow uses local arithmetic on three signals (freshness, headroom, relevance). No AI models, no server-side processing.
What happens to my data?
Nothing leaves your browser except license key validation. No analytics, no tracking, completely local processing.
Does Winnow post or reply for me?
No. Winnow is read-only. It highlights posts and marks them up, but you manually decide what to reply to.
How does Winnow score posts?
Three signals: Freshness (50% weight)—posts in their first 15 minutes, Headroom (30%)—high views relative to replies, Relevance (20%)—your keyword matches.