Head to head
CommentGuard vs ReplyZen
CommentGuard is an established Meta-focused comment-moderation specialist, while ReplyZen leans into AI sales-style replies with conversion tracking and comment-to-DM. Both moderate Facebook and Instagram comments — the pick comes down to whether you want a proven moderation incumbent or an AI-reply-and-conversion engine. ROAS Shield is the ads-first alternative for advertisers who want campaign / ad-set / ad context on every comment.
Side by side
CommentGuard vs ReplyZen vs ROAS Shield
| Feature | CommentGuard | ReplyZen | ROAS Shield |
|---|---|---|---|
| Built specifically for paid Meta ads | ✕ | ✓ | ✓ |
| Ad-context columns in inbox (campaign, ad set, ad) | — | — | ✓ |
| Inverse creative lookup for unmapped comments | — | — | ✓ |
| Volume pricing for high-spend advertisers | $199 / 50k comments (Elite) | — | £199 / 500k comments |
Sourced from commentguard.io and commentguard.io/pricing as of May 2026, plus our own product. Sourced from replyzen.ai as of May 2026, plus our own product. ReplyZen publishes no public price points; pricing is described as volume-based.
Where each fits
No single winner — pick for your team
CommentGuard
CommentGuard supports broader Page-comment workflows not focused on paid ads. If most of your moderation is on organic posts rather than ad creatives, it may fit your team better.
ReplyZen
ReplyZen leans into sales-style AI replies with UTM and conversion tracking — a strong fit for advertisers who want to attribute revenue to comment replies.
ROAS Shield (ads-first alternative)
Every comment in the inbox shows campaign, ad set, and ad context. You can filter by campaign, see which ads attract spam, and tune rules per-ad. Generic comment moderators do not foreground which ad a comment is on.
The ads-first alternative
Run the numbers on your own ad spend
ROAS Shield prices on comment volume, not seats. Start a 7-day trial without a card.