
JSFiddle
CodeSandbox
GitHub
replit
VS Code
Pastebin.com
JS Bin
A front end web development playground.

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

Which is more popular?
Based on our record, CodePen seems to be more popular. It has been mentioned 513 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codepen.io | tryherd.app |
| Pricing | — | |
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| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of CodePen yet.
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,...
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
Walkthroughs and reviews on video.
What Is Codepen?
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CodePen and TryHerd.app.
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 CodePen and TryHerd.app. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Codepen is a social network for developers to show off their work, ask and answer questions, and exchange ideas. It's like a Reddit for coding and design, with a large community of talented web developers.
Codepen is a social development environment that allows developers to showcase their work and experiment with HTML, CSS, and JavaScript in a collaborative space. Codepen’s focus on visual and interactive development...
Codepen is a social development environment for front-end designers and developers. Build and deploy a website, show off your work, build test cases to learn.
We have no reviews of TryHerd.app yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


> I vividly remember IE and many hacks to have css elements properly working in it… The common advice now is to only use CSS that is supported in the last two major versions of each major browser. You can check any css property's support... - Source: Hacker News / 2 months ago
Thank you, heartfelt... For sharing an artwork, a miracle! Just in case, have you considered publishing the work at platforms as CodePen, where genius Artists/People express their art, too, as you?: // https://codepen.io/. - Source: Hacker News / 3 months ago
Embed on DEV: If you prefer CodePen embed, create a Pen with that HTML and add to the post as: {% codepen https://codepen.io//pen/ %}. - Source: dev.to / 12 months ago
Tracking TryHerd.app since Jul 2026.
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Zero party data at speed & scale, for DTC brands on Shopify and beyond. 10x faster survey insights for marketing attribution, personalization, CRO & more
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Grapevine is an online survey tool for employee surveys.
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