

Ultra · Sprout preset
Combines electronics merchandising with AI-assisted setup, stock counters, and restock notifications.
Google PageSpeed Insights scores for the home page, out of 100
The official Boost demo scored 74/100 on mobile and 91/100 on desktop in our October 2026 test. Mobile LCP was 4.5s, CLS was 0.08, and Total Blocking Time was 0ms.
Tested Oct 2026 · Google PageSpeed Insights lab data
| Metric | Mobile | Desktop |
|---|---|---|
| Largest Contentful Paint | 4.5s | 1.1s |
| Cumulative Layout Shift | 0.08 | 0.03 |
| Total Blocking Time | 0ms | 0ms |
| Speed Index | 7.2s | 2.9s |
Across 8 live stores we tested, the average PageSpeed score was 53/100 on mobile and 75/100 on desktop. Average mobile LCP was 12.6s and CLS was 0.03. These results reflect complete production stores, not the theme alone.
Tested Oct 2026 · Results include each store's apps, images, tracking scripts and customizations
| Metric | Mobile | Desktop |
|---|---|---|
| Largest Contentful Paint | 12.6s | 2.2s |
| Cumulative Layout Shift | 0.03 | 0.01 |
| Total Blocking Time | 640ms | 336ms |
| Speed Index | 8.1s | 2.1s |
Google PageSpeed Insights scores for the home page, out of 100
The official Inspire demo scored 67/100 on mobile and 93/100 on desktop in our October 2026 test. On mobile, LCP was 6.5s, CLS 0.00 and Total Blocking Time 83ms.
Tested Oct 2026 · Google PageSpeed Insights lab data
| Metric | Mobile | Desktop |
|---|---|---|
| Largest Contentful Paint | 6.5s | 1.2s |
| Cumulative Layout Shift | 0.00 | 0.02 |
| Total Blocking Time | 83ms | 9ms |
| Speed Index | 8.0s | 2.3s |
The 8 live stores we tested averaged 53/100 on mobile and 75/100 on desktop. Average mobile LCP was 12.6s and CLS was 0.03. These are complete production stores, so the numbers cover more than the theme itself.
Tested Oct 2026 · Results include each store's apps, images, tracking scripts and customizations
| Metric | Mobile | Desktop |
|---|---|---|
| Largest Contentful Paint | 12.6s | 2.2s |
| Cumulative Layout Shift | 0.03 | 0.01 |
| Total Blocking Time | 640ms | 336ms |
| Speed Index | 8.1s | 2.1s |
Google PageSpeed Insights scores for the home page, out of 100
Tested in October 2026, the official Flourish demo scored 73/100 on mobile and 90/100 on desktop. On mobile, LCP was 5.8s, CLS 0.09 and Total Blocking Time 2ms.
Tested Oct 2026 · Google PageSpeed Insights lab data
| Metric | Mobile | Desktop |
|---|---|---|
| Largest Contentful Paint | 5.8s | 1.3s |
| Cumulative Layout Shift | 0.09 | 0.03 |
| Total Blocking Time | 2ms | 63ms |
| Speed Index | 3.9s | 2.8s |
The 8 live stores we tested averaged 53/100 on mobile and 75/100 on desktop. Average mobile LCP was 12.6s and CLS was 0.03. These are complete production stores, so the numbers cover more than the theme itself.
Tested Oct 2026 · Results include each store's apps, images, tracking scripts and customizations
| Metric | Mobile | Desktop |
|---|---|---|
| Largest Contentful Paint | 12.6s | 2.2s |
| Cumulative Layout Shift | 0.03 | 0.01 |
| Total Blocking Time | 640ms | 336ms |
| Speed Index | 8.1s | 2.1s |
Google PageSpeed Insights scores for the home page, out of 100
The official Blossom demo scored 78/100 on mobile and 98/100 on desktop in our October 2026 test. On mobile, LCP was 4.5s, CLS 0.10 and Total Blocking Time 153ms.
Tested Oct 2026 · Google PageSpeed Insights lab data
| Metric | Mobile | Desktop |
|---|---|---|
| Largest Contentful Paint | 4.5s | 901ms |
| Cumulative Layout Shift | 0.10 | 0.04 |
| Total Blocking Time | 153ms | 0ms |
| Speed Index | 3.0s | 1.3s |
The 8 live stores we tested averaged 53/100 on mobile and 75/100 on desktop. Average mobile LCP was 12.6s and CLS was 0.03. These are complete production stores, so the numbers cover more than the theme itself.
Tested Oct 2026 · Results include each store's apps, images, tracking scripts and customizations
| Metric | Mobile | Desktop |
|---|---|---|
| Largest Contentful Paint | 12.6s | 2.2s |
| Cumulative Layout Shift | 0.03 | 0.01 |
| Total Blocking Time | 640ms | 336ms |
| Speed Index | 8.1s | 2.1s |
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Boost has received 2 updates in the last 12 months.
Support for Shopify's new account login
Support for Extended Variants, Combined Listings and Native Swatches
Remove references to deprecated fonts
Restructured theme files for theme store redesign
Remove reference to deprecated Shopify fonts.
72 of 83 reviews are positive, 3 neutral and 8 negative. Merchants most often praise the responsive, patient support team, the clean code, the wide customisation options and fast page speed. The most common criticism is limited layout and variant flexibility, such as missing full-width options, poor variant handling and no cart drawer, with some reviewers saying these gaps remain unresolved.
Generated from all 83 Theme Store reviews ·
Boost has received 3 reviews in the last 12 months.