BookThatApp vs Vitals
Head-to-head usage across the sites we track.
Top sites by authority
BookThatApp · Vitals · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
2
1
Open Page Rank 8+
3
3
Open Page Rank 7+
4
6
Open Page Rank 6+
15
9
Open Page Rank 5+
27
29
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
BookThatApp · Vitals · share of sites in each country using one or the other
United States
998
3,566
United Kingdom
332
1,463
India
137
1,304
Canada
369
1,060
Australia
268
984
Germany
142
990
France
119
979
Spain
77
663
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | BookThatApp | Vitals |
|---|---|---|
| LCP | 1.3 s | 1.6 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 400 ms | 500 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
BookThatApp to Vitals
| Domain | When |
|---|---|
| museumofmini.com | Dec 2025 |
| howtoflyairplanes.com | Aug 2025 |