Sentry vs UserVoice
Head-to-head usage across the sites we track.
Top sites by authority
Sentry · UserVoice · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
136
4
Open Page Rank 8+
2,050
22
Open Page Rank 7+
7,315
39
Open Page Rank 6+
13,313
63
Open Page Rank 5+
21,753
83
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Sentry · UserVoice · share of sites in each country using one or the other
United States
359,106
408
United Kingdom
105,998
257
India
86,387
265
Canada
84,660
258
Germany
77,287
194
France
75,293
205
Brazil
74,887
197
Japan
58,513
165
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Sentry | UserVoice |
|---|---|---|
| LCP | 1.6 s | 1.9 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 600 ms | 800 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.