Calendly vs Zocdoc
Head-to-head usage across the sites we track.
Top sites by authority
Calendly · Zocdoc · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
24
0
Open Page Rank 8+
188
3
Open Page Rank 7+
578
5
Open Page Rank 6+
1,095
8
Open Page Rank 5+
2,029
13
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Calendly · Zocdoc · share of sites in each country using one or the other
United States
16,543
1,332
Germany
16,090
17
India
7,113
127
France
5,462
11
Italy
5,184
10
United Kingdom
4,681
68
Canada
3,854
44
Spain
3,136
14
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Calendly | Zocdoc |
|---|---|---|
| LCP | 1.9 s | 1.8 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 900 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.