Subsecond: Speed Check

Real user monitoring for page speed and web vitals

by Subsecond · Launched: August 2022

4.0 (1) on Shopify

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Subsecond: Speed Check

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About Subsecond: Speed Check

Subsecond: Speed Check provides simple Real User Monitoring (RUM) for Shopify stores. Track all of the page speed web vitals metrics popularized by Google with one-click installation and a easy to read dashboard.Many other solutions use synthetic page speed data that might differ from the real experience of your customers. Measuring the experience of real users is the best way to learn what changes should be made.This app uses the web-vitals library for its metric definitions. Speed Check...

Last verified: July 17, 2026 · Fresh

App details

Developer: Subsecond
Category: Marketing & conversion
Launched: August 2022
Rating: 4.0 (1) on Shopify

Key features

Subsecond: Speed Check

Ratings & reviews

based on 1 Shopify App Store reviews

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Really good, very useful free app. 100% recommend to anyone looking at improving their Google web core vital results. It would be great if we could export the RUM data into a csv / google sheets file etc... would this be something you'd consider adding?

— Wiggly Wigglers

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