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+
25
0
Open Page Rank 8+
189
3
Open Page Rank 7+
566
5
Open Page Rank 6+
1,090
8
Open Page Rank 5+
2,024
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
16,610
1,439
Germany
16,330
20
India
7,172
125
France
5,006
17
Italy
4,959
11
United Kingdom
4,612
66
Canada
3,850
45
Spain
2,825
18
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, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.