Curator.io and similar tools are social feed aggregators: they pull posts from a connected account and display them in a feed. That is useful for showing activity, but it is not the same as building social proof that moves a buyer to act.
Castio takes a different approach. It is manual-first and curation-first. You add or paste exactly the proof you want — testimonials, reviews, screenshots, metrics, UGC — approve each card, and publish a wall that matches your brand and carries a call to action.
A real Castio wall
Maya Patel
Head of Ops · Northwind Labs
We replaced three tools with this in a week. Onboarding was the smoothest I've seen in years.
Internal dashboard
Activation up 34%
New-user activation jumped 34% in the first month after switching.
Dev Okonkwo
@devbuilds
Okay this just became my favorite launch of the quarter. Clean, fast, does exactly what it says.
Tara Lindqvist
Founder · Cadence
★★★★★Worth every minute saved
Set up our first proof wall in under five minutes and embedded it on our pricing page same day.
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Curated proof vs. raw feeds
A raw social feed shows everything, in chronological order, with no editorial control. A proof wall shows only what you have approved, in the order you choose, styled to fit the page it lives on.
For a landing page, pricing page or launch page, curation wins. You want your strongest proof first, not your latest post.
- ✓Approve, hide or archive every card before it goes live
- ✓Order proof by impact, not by date
- ✓13 proof types, not just social posts
No integrations to wait on
Because Castio is manual-first, you are never blocked waiting on an OAuth approval or a platform review. Paste a tweet, a review screenshot, a customer email quote or a metric and it is on your wall in seconds.
Designed to match your brand
Castio walls support light and dark themes, custom accent colors, card radius and spacing, plus a built-in CTA. The result looks like part of your site — not a bolted-on widget.
Frequently asked questions
Is Castio a direct Curator.io replacement?+
It solves a related problem differently. If your goal is conversion-focused, curated proof walls rather than a mirrored social feed, Castio is a strong fit.
Do I need to connect social accounts?+
No. Castio is manual-first, so you add or paste proof yourself without social OAuth.
Can I embed the wall anywhere?+
Yes. Every published wall has a one-line iframe embed that works on any website or builder.
Is there a free plan?+
Yes, you can build your first proof wall free and a lifetime deal is available.