Fast Simon usage & market intelligence
OngoingAI has observed Fast Simon on 252 ecommerce stores across 4 platforms.
Compare Fast Simon alternativesLast checked Sep 6, 2026
| Store | Traffic rank | Cohort |
|---|---|---|
| #25,362 | Top 50K | |
| #32,532 | Top 50K | |
| #36,336 | Top 50K | |
| #45,839 | Top 50K | |
| #52,932 | Top 100K | |
| #53,416 | Top 100K | |
| #57,188 | Top 100K | |
| #58,705 | Top 100K | |
| #67,773 | Top 100K | |
| #75,882 | Top 100K |
Showing 10 of 252 stores we track running Fast Simon.
Get the full list
Klaviyo145 stores
Microsoft Clarity78 stores
Gorgias76 stores
Yotpo67 stores
Swym Wishlist Plus55 stores
Attentive49 stores
BigCommerce39 stores
Google Ads39 stores
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Frequently asked questions
We currently observe Fast Simon running on 252 ecommerce stores, most of them on Shopify.
Not currently — across the stores we observe, 2 more confirmed removals than installs over the past 90 days.
High-ranked stores where we've observed Fast Simon include reebok.com, stevemadden.com, toms.com, kef.com, shopakira.com. We track 252 stores running it in total.
Stores running Fast Simon most often also run Klaviyo, Microsoft Clarity, Gorgias.
Common alternatives to Fast Simon include Algolia, Searchanise, Constructor.io, Klevu.
Fast Simon's observed install base spans Shopify (71%), BigCommerce (15%), WooCommerce (8%).