Customer.io vs HubSpot
Head-to-head usage across the sites we track.
Top sites by authority
Customer.io · HubSpot · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
79
Open Page Rank 8+
18
1,033
Open Page Rank 7+
68
4,465
Open Page Rank 6+
117
9,250
Open Page Rank 5+
181
16,687
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Customer.io · HubSpot · share of sites in each country using one or the other
United States
868
97,159
India
564
35,327
United Kingdom
489
31,934
Canada
467
25,721
Germany
405
19,345
France
370
19,068
Australia
363
18,192
Spain
346
17,008
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Customer.io | HubSpot |
|---|---|---|
| LCP | 2.4 s | 2 s |
| INP | 125 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 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.
Customer.io to HubSpot
| Domain | When |
|---|---|
| wingassistant.com | Jul 2026 |