Sentry vs UserRules
Head-to-head usage across the sites we track.
Top sites by authority
Sentry · UserRules · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
136
0
Open Page Rank 8+
2,050
0
Open Page Rank 7+
7,315
0
Open Page Rank 6+
13,313
0
Open Page Rank 5+
21,753
0
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Sentry · UserRules · share of sites in each country using one or the other
United States
359,106
3
United Kingdom
105,998
4
India
86,387
1
Canada
84,660
1
Germany
77,287
2
France
75,293
1
Brazil
74,887
1
Japan
58,513
1
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Sentry | UserRules |
|---|---|---|
| LCP | 1.6 s | 2.1 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 600 ms | 1200 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.