Bookero vs Calendly
Head-to-head usage across the sites we track.
Top sites by authority
Bookero · Calendly · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
25
Open Page Rank 8+
2
199
Open Page Rank 7+
5
587
Open Page Rank 6+
5
1,124
Open Page Rank 5+
8
2,074
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Bookero · Calendly · share of sites in each country using one or the other
Germany
21
18,452
United States
12
18,062
India
6
8,027
France
7
6,306
Italy
7
5,616
United Kingdom
13
5,376
Canada
5
4,350
Spain
7
3,324
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bookero | Calendly |
|---|---|---|
| LCP | 1.9 s | 1.9 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 1100 ms | 800 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.