Shopify Buy Button vs Smile App
Head-to-head usage across the sites we track.
Top sites by authority
Shopify Buy Button · Smile App · 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
Shopify Buy Button · Smile App · share of sites in each country using one or the other
United States
1,639
13,022
United Kingdom
569
4,121
Canada
538
3,860
India
375
2,789
Australia
316
2,726
France
290
2,056
Germany
344
1,706
Spain
213
1,201
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Shopify Buy Button | Smile App |
|---|---|---|
| LCP | 1.8 s | 1.4 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 600 ms | 500 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Smile App to Shopify Buy Button
| Domain | When |
|---|---|
| undoage.com | Aug 2025 |