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+
138
4
Open Page Rank 8+
2,041
20
Open Page Rank 7+
7,254
35
Open Page Rank 6+
13,210
55
Open Page Rank 5+
21,676
73
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
323,523
370
United Kingdom
95,135
229
India
78,278
248
Canada
75,350
224
Brazil
73,076
175
Germany
70,758
174
France
65,757
176
Japan
51,705
140
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Sentry | UserVoice |
|---|---|---|
| LCP | 1.7 s | 1.8 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 600 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.