Sentry vs UserRules
Head-to-head usage across the sites we track.
Detections for UserRules end in Jul 2022. The fingerprint catalog behind our crawls no longer carries that technology as its own entry, usually because it was retired or split into more specific ones, so its figure is the last recorded and is not directly comparable with a currently tracked technology.
Top sites by authority
Sentry · UserRules · how many of each technology's sites sit in the web's highest authority tiers
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
316,827
3
United Kingdom
94,693
3
India
77,149
1
Canada
74,305
3
Brazil
72,498
1
Germany
69,458
3
France
66,242
3
Japan
51,207
1
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Sentry | UserRules |
|---|---|---|
| LCP | 1.7 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 600 ms | 1000 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.