Real-time Reach Score for tweets. Aligned to xai-org/x-algorithm. 25 signal predictors, video-first scoring, BYOK AI.
Users
23
+2 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#146K
#121K among extensions
Version
4.1.0
updated 19 May 2026
Users
monthly, 7 months
Latest, 18 Oct 2026:23 usersMove the mouse over the chart for any month
Ratings count
monthly, 7 months
Latest, 18 Oct 2026:1 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About ReachOS — Content Reach Optimizer
❯ ReachOS - Know your reach before you post.
Open-source Chrome extension that scores your tweets in real time against 35 algorithm-research-backed rules, predicts your reach, and shows you exactly how to improve it. BYOK (Bring
Your Own Keys) - fully self-hostable.
--- FEATURES ---
Score Overlay: A live 0-100 Reach Score appears on X.com as you type. Breakdown bars show Hook, Structure, Engagement, Penalties, and Bonuses in real time.
Reach Forecast: Predicts how many impressions your tweet will get. Shows reply probability, bookmark chance, and viral breakout percentage.
What-If Scenarios: See exactly what happens if you remove a link (+52%), add an image (+38%), post at peak time (+25%), or align with a trending topic (+15%). Click to apply.
X-Ray Mode: Scores every tweet on your timeline as you scroll. Color-coded pills (red to purple) show reach potential at a glance. See what works and what doesn't.
AI Auto-Optimize: One click runs 5 rounds of iterative AI rewriting to find the highest-reach version of your tweet. Powered by Claude.
AI Slop Detection: Flags AI-sounding language patterns (28 heuristic patterns + LLM verification). The algorithm penalizes robotic content.
Reply Coach: Notifies you about unanswered replies on your tweets. Replying to engaged followers gives a 150x algorithm distribution boost.
Self-Reply Strategy: Generate a conversation-starting self-reply. Author replies are worth 150x a like in the algorithm.
Trending Alignment: Detects when your tweet matches currently trending topics for bonus reach points.
Posting Time Optimizer: Shows optimal posting windows based on research-backed UTC peak engagement data.
Self-Learning: The system tracks your predictions vs actual performance and auto-calibrates over time. The longer you use it, the more accurate it gets.
BYOK (Bring Your Own Keys): Deploy your own API server or use the hosted instance. Configure in Settings. Fully open-source on GitHub.
--- HOW IT WORKS ---
1. Install ReachOS and open X.com
2. Start composing a tweet - score appears instantly
3. Check the Reach Forecast to see predicted impressions
4. Use What-If Scenarios to optimize before posting
5. Browse your timeline with X-Ray Mode to learn what works
--- BACKED BY RESEARCH ---
35 rules, 132 tests. Every rule is derived from the open-sourced X algorithm (twitter/the-algorithm), viral pattern analysis, and platform signal research. Not guesswork.
Key signals: Reply = 27x a like. Bookmark = 20x. Media = 2x Earlybird boost. External links = -30 to -50% reach. 3+ hashtags = -40% engagement.
Open source: github.com/AytuncYildizli/reach-optimizer
Growth
Window
Users
Change
Ratings
Rating
7 days
0
+0.0%
0
0.00
30 days
+2
+9.5%
0
0.00
6 months
+15
+187.5%
0
0.00
Chrome Web Store search rankings
Where ReachOS — Content Reach Optimizer appears when people search the store, with the 30 day change