Klaviyo vs Simplero
Head-to-head usage across the sites we track.
Top sites by authority
Klaviyo · Simplero · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
17
0
Open Page Rank 8+
117
0
Open Page Rank 7+
456
1
Open Page Rank 6+
1,239
1
Open Page Rank 5+
3,036
3
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Klaviyo · Simplero · share of sites in each country using one or the other
United States
103,547
92
United Kingdom
40,783
28
Canada
33,265
27
Australia
30,331
24
Germany
26,133
11
France
23,908
5
India
22,437
16
Spain
16,738
7
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Klaviyo | Simplero |
|---|---|---|
| LCP | 1.6 s | 1.8 s |
| INP | 100 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 1000 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.