| Metric | Adition | Bootstrap | Winner |
|---|---|---|---|
| Performance | 50 | 46 | Adition |
| Accessibility | 99 | 87 | Adition |
| Best Practices | 88 | 88 | Tie |
| SEO | 88 | 90 | Bootstrap |
| Security | 76 | 65 | Adition |
| TTFB | 408ms | 432ms | Adition |
| Composite | 79 | 74 | Adition |
Adition outperforms Bootstrap in 5 of 7 categories, with a stronger composite score (79 vs 74). Bootstrap leads in SEO.
Choose Adition when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Bootstrap when your primary concern is SEO. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 2 audited Adition sites and 903 audited Bootstrap 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 →
Small sample: one or both technologies have fewer than 10 audited sites. Treat these numbers as directional — medians stabilize around 20–30 audits per side.
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