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Herd collects post-purchase feedback from your Shopify customers and delivers a plain-English AI summary every Monday morning. Free plan available.

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Website, pricing, platforms and company facts side by side.
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| Website | tryherd.app | opalstack.com |
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| Platforms | — | |
| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Most store owners miss the feedback that matters because there is too much noise and not enough time. Herd places a simple star rating widget on your Shopify thank-you page after every purchase. Customers rate in 15 seconds. Every Monday you get a plain-English AI summary of what customers loved,...
No description of Opalstack yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing TryHerd.app and Opalstack.
TryHerd.app's answer
Most competitors focus on marketing attribution and charge $39-299/month. Herd focuses on the checkout experience, starts free, and never requires you to log in, the Monday digest comes to you.
TryHerd.app's answer
Herd is newly launched and onboarding its first merchants.
TryHerd.app's answer
Remix, Shopify App Remix, Supabase, Anthropic Claude API, Render, and Resend.
TryHerd.app's answer
Every other post-purchase app hands you a dashboard. Herd reads every response and emails you a plain-English summary each Monday, what customers loved, what frustrated them, one thing to fix. No charts, no exporting.
TryHerd.app's answer
Most merchants only learn something went wrong after a bad review. Herd puts a 15-second widget on the thank-you page and has AI read every response, so merchants hear about problems before customers go public.
TryHerd.app's answer
Small to mid-sized Shopify merchants, often solo founders, in apparel, skincare, home goods, and handmade products who care about customer experience but don't have time for a survey dashboard.
Share your experience with using TryHerd.app and Opalstack. For example, how are they different and which one is better?
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