Based on 1698 and 16 real audits
| Metric | core-js | React Native for Web | Winner |
|---|---|---|---|
| Performance | 36 | 35 | core-js |
| Accessibility | 88 | 83 | core-js |
| Best Practices | 84 | 94 | React Native for Web |
| SEO | 91 | 92 | React Native for Web |
| Security | 66 | 69 | React Native for Web |
| TTFB | 398ms | 617ms | core-js |
| Composite | 73 | 73 | Tie |
core-js and React Native for Web are closely matched, each leading in different categories. core-js has a composite score of 73 while React Native for Web scores 73.
Choose core-js when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Choose React Native for Web when your primary concern is best practices and security. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 1698 audited core-js sites and 16 audited React Native for Web 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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