AddEvent vs Calendly
Head-to-head usage across the sites we track.
Top sites by authority
AddEvent · Calendly · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
6
24
Open Page Rank 8+
27
188
Open Page Rank 7+
71
578
Open Page Rank 6+
118
1,095
Open Page Rank 5+
159
2,029
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
AddEvent · Calendly · share of sites in each country using one or the other
United States
598
16,543
Germany
153
16,090
India
250
7,113
France
177
5,462
Italy
150
5,184
United Kingdom
271
4,681
Canada
250
3,854
Spain
155
3,136
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | AddEvent | Calendly |
|---|---|---|
| LCP | 1.9 s | 1.9 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 800 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
AddEvent to Calendly
| Domain | When |
|---|---|
| gspdx.org | Oct 2025 |