
AnalyticsBy ULTRO Inc.Launched October 15, 2026Updated October 16, 2026
GapFill: GA4 Server Tracking launched on October 15, 2026. Shoplist is watching for its first storefront installs and tracking pricing in the meantime.
Apps merchants weigh against GapFill: GA4 Server Tracking, with their own detected stores and ratings.
Get alerted on first storefront installs, review spikes, pricing changes, and listing edits.
Find orders GA4 didn't track and send them from the server. Keep GA4 revenue close to real sales.
GA4 misses purchases when ad blockers, browser privacy settings or closed tabs stop the tag, and it never sees in-app checkouts in AI assistants or social apps. GapFill compares your orders with GA4 and shows what's missing by channel, source/medium and payment method. Orders still missing after 26 hours are sent to your GA4 property via the Measurement Protocol, with the GA4 client ID kept at checkout. Recurring orders, refunds and cancellations are optional. Nothing is sent until you approve.
Every number on this page comes from public storefront scans and the public Shopify App Store listing. If Shoplist shows GapFill: GA4 Server Tracking on a store, it is there.
Read the data methodologyCompare
Detected stores, ratings, pricing, and momentum side by side.
Developer
Every app ULTRO Inc. publishes, with their detected reach.
Rankings
The ten apps gaining the most detected installs in each category.
Directory
Browse every app Shoplist tracks, by category, rating, and reach.