themestestedbyWhirlwind eCommerce logo — Shopify and BigCommerce ecommerce development agencyWhirlwind eCommerce

eComX

eComX has 4 themes tested on Themestested, for Shopify. Their median Google Lighthouse mobile speed score is 80 (desktop 95), with 0 of 4 scoring 90 or better on mobile. The fastest on mobile is Electro at 86. Last measured 2026-11-10, on each theme's own demo store.

4themes tested
80median mobile speed
95median desktop speed
94median mobile SEO
97median accessibility
ThemePlatformPriceMobile · speed SEO a11yDesktop · speed SEO a11yTested
Electro Shopify $300 869295 979289 2026-11-07
Blum Shopify $170 819799 989798 2026-11-08
Shine Shopify $210 789295 939295 2026-11-08
Normcore Shopify $320 759598 909598 2026-11-10

Sorted by mobile speed. Each theme's score is the median of its tested presets; open a theme for its pages, history and the audits behind the number.

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Any of these themes can carry its live score on your own site. The badge is an image that always shows the current number, links back to the theme's page here, and updates as the theme is re-tested.

Electro: mobile speed 86 on Themestested
<a href="https://themestested.com/theme/shopify/electro"><img src="https://themestested.com/badge/shopify/electro.svg" alt="Electro speed score on Themestested" height="20"></a>

Swap the theme in the address for any of yours. Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.