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+
139
3
Open Page Rank 8+
2,047
20
Open Page Rank 7+
7,280
34
Open Page Rank 6+
13,311
53
Open Page Rank 5+
21,772
69
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
316,827
365
United Kingdom
94,693
235
India
77,149
243
Canada
74,305
233
Brazil
72,498
176
Germany
69,458
175
France
66,242
179
Japan
51,207
145
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, 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.