PostPilot
for X
See your post's score before you hit send.
PostPilot lives inside the X composer and scores every post as you type: hook strength, specificity, and 79 engagement-killing patterns, caught while you can still fix them.
No account required. Scoring and drafts stay on your device.
Not ready to install? Try it free, no signup →
Free tier
The feedback loop X never gave you.
Every other tool for X wants your account: to schedule for you, pull your analytics, or auto-reply on your behalf. PostPilot doesn't. It works in the only moment that matters, while you're still writing, and everything it knows about your performance (Score Trends, the Full Breakdown) comes from data collected locally on your device, never a connected account. It hooks directly into the composer, so we watch X's layout for changes and ship fixes fast, usually the same day.
Real-time scoring
A 0–100 score updates with every keystroke, right under the compose box.
Hook analysis
Detects which of 20 hook types you're using (curiosity gap, data reveal, contrarian) and how strong it lands.
Governor warnings
79 patterns that suppress engagement, flagged with severity before you post them.
Specificity scoring
Vague claims get called out. Numbers and concrete details get rewarded.
AI rewrite
One-click improved version via Claude — included, no API key needed. Pro rewrites are calibrated to your voice profile.
Score history & drafts
Track published-post scores with a 7-day rolling average. Queue drafts with scores attached.
Score Trends
See your own scoring trend over time, built entirely from data already on your device, never from a connected account.
Pro tier ($24/mo) or $240/yr, 2 months free
It learns what works for you.
Generic advice scores generic posts. Pro fingerprints your voice and your audience, then scores against them. Annual billing available at checkout.
Voice Match PRO
Fingerprints your writing style across 13 dimensions and personalizes every score to sound like you, not a template.
Viral Post Analyzer PRO
Scores any post in your feed. Every viral post becomes a lesson you can steal from.
3 rewrite variants PRO
Each variant targets a different hook type. Pick the angle, keep your voice.
Thread scorer PRO
Every tweet in a thread scored individually, and the weakest link gets flagged.
Hook Library PRO
Your best-performing openers, saved automatically and remixable when you're stuck.
Learning engine PRO
Analyzes your past performance to find what your audience actually responds to.
Full Breakdown PRO
Hook performance, best posting times, topic and media impact, and reply craft: the complete picture behind every score, still without handing over your account.
The math
Cheaper than ClimbX or Tweet Hunter. The one feature none of them have.
| Tool | Price | Scores as you type | Focus |
|---|---|---|---|
| PostPilot | $24/mo ($240/yr) | ✓ in the composer | Post quality, before you send |
| Typefully | $12.50–100/mo | ✗ | Thread writing & scheduling |
| Tweet Hunter | $49/mo | ✗ | Inspiration & scheduling |
| ClimbX | $29 to $39/mo | ✗ | Auto-drafts and schedules for you |
| Buffer / Hootsuite | $15–100/mo | ✗ | Multi-network scheduling |
FAQ
Before you ask.
Can I cancel anytime?
Yes. Pro is a monthly subscription with no contract. Cancel from your LemonSqueezy customer portal whenever you want and you won't be billed again. The free tier (real-time scoring, hook analysis, governor warnings) stays installed and working either way.
Does the AI rewrite cost extra?
No — it's included, with no API key to set up. Free gets 3 rewrites/day, Pro gets 40/day with 3 variants each, calibrated to your voice profile. Limits reset daily; see the privacy policy for what's sent to generate a rewrite.
Does PostPilot post or schedule anything for me?
No. PostPilot only scores what you've already written. It never auto-posts, auto-replies, or touches your account. You stay in full control of what goes out.
Privacy
Scoring stays local.
Nothing to leak.
- All scoring, drafts, and your voice fingerprint live in chrome.storage.local — never sent anywhere.
- Two things leave your device: license validation, and — only when you ask for a rewrite — your post text goes to PostPilot's rewrite service to generate suggestions.
- Uninstall and it's all gone. There is no PostPilot database of your posts to be breached.