CommentAI
On-device AI comments for LinkedIn, Twitter, Reddit, and more.
Standalone $2.99/mo or $29.90/yr.
Why it matters
What CommentAI does that nothing else does
- Benefit 1:
Five platforms in one extension; competitors charge for one platform at a time.
- Benefit 2:
No API key required — uses on-device browser AI, never your OpenAI credit.
- Benefit 3:
Free tier gives three comments per day on LinkedIn and Twitter.
- Benefit 4:
Pro tier unlocks unlimited comments, all five platforms, six tones, and saved templates.
Pricing
Buy CommentAI alone, or get the bundle
Use only this extension? Buy it standalone. Use three or more Aegis extensions? The Pro Pack pays for itself.
Standalone
CommentAI Pro
$2.99/mo
Or $29.90/yr — save when paid annually.
Pro tier on CommentAI only. Cancel anytime.
Get CommentAI ProBest value
Save $21/yrAegis Pro Pack
$9.99/mo
Or $99/yr — covers every Aegis extension you install.
Unlocks Pro on CommentAI and every other Aegis extension. New extensions included automatically.
Get the Pro PackBuilt the Aegis way
Privacy you can verify, not just claim
On-device by default
Every Aegis extension runs in your browser. No silent cloud upload, no server-side processing of your activity.
Never sold, never bundled
Aegis extensions never change ownership. Updates come from the same publisher you trusted at install.
No account required
Install and use immediately. Pro features unlock with a single sign-in to your Aegis Pro Pack.
MV3-native
Built for Chrome Manifest V3 from day one — no deprecation warnings, no broken background pages.
Why switch
CommentAI vs Engage AI
Engage AI charges several times more per month for a single platform and forces you to bring your own OpenAI key. AI Comment Writer covers five platforms with on-device AI and ships a free tier with no key required.
| Feature | CommentAI | Engage AI |
|---|---|---|
| Monthly price | $2.99/mo | $49.00/mo |
| Account required | No — install and use immediately | Often yes (varies by competitor) |
| Data leaves the browser | No — on-device by default | See competitor privacy policy |
| Ownership transfer risk | Aegis never sells extensions | Varies — see ExtensionWatch in this catalog |
| Bundled with Aegis Pro Pack | Yes — $9.99/mo unlocks every extension | No bundle |
See it in action
CommentAI screenshots
More screenshots and the full feature walkthrough live on the CommentAI landing page.
Common questions
- Do I need an OpenAI API key?
- No. Comments are generated by on-device browser AI. There is no per-comment API cost and no risk of an exhausted personal API budget.
- Which platforms does the free tier cover?
- LinkedIn and Twitter, three comments per day. Pro unlocks Reddit, Facebook, and Instagram plus unlimited daily comments and six tone presets.
- Will AI-generated comments get my LinkedIn account flagged?
- The extension only fills the comment box; you choose what to post and when. There is no auto-posting, no scheduling against the LinkedIn API, and no behaviour LinkedIn flags as automation.
- How does the Aegis Pro Pack unlock CommentAI?
- Sign in to aegisfirma.com from any installed Aegis extension popup. The cookie-auth flow detects your active Pro Pack and unlocks Pro features instantly — no license key to copy or paste.
- Where is my CommentAI data stored?
- CommentAI stores everything in chrome.storage on your device. Your subscription record lives in our payment provider's account; we do not aggregate browsing or activity data.
- Can I cancel CommentAI Pro anytime?
- Yes — billing stops at the end of the current period. Pro features remain active until the period ends, then drop back to the free tier.
- Why should I trust an extension I just heard of?
- Aegis extensions never change ownership and never sell user data. We publish security audit results and ship MV3-native code so Chrome itself enforces the permissions we claim.
Try CommentAI free, upgrade when ready
Free tier covers the basics. Pro Pack at $9.99/mo unlocks every Aegis extension at once.