| Metric | Isotope | Masonry | Winner |
|---|---|---|---|
| Performance | 46 | 47 | Masonry |
| Accessibility | 85 | 85 | Tie |
| Best Practices | 86 | 88 | Masonry |
| SEO | 90 | 90 | Tie |
| Security | 66 | 65 | Isotope |
| TTFB | 554ms | 504ms | Masonry |
| Composite | 74 | 74 | Tie |
Masonry outperforms Isotope in 3 of 7 categories, with a stronger composite score (74 vs 74). Isotope leads in security.
Choose Isotope when your primary concern is security. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Masonry when your primary concern is server response time and best practices. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 51 audited Isotope sites and 107 audited Masonry sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →
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