OptinMonster vs Sleeknote

OptinMonster is used by more websites in our catalog: 3,145 use OptinMonster and 228 use Sleeknote.

Sleeknote sites have the higher median Ahrefs Domain Rating (OptinMonster: 39, Sleeknote: 42).

Between 2026-06 and 2026-07, OptinMonster went from 0.45% to 0.36% of all tracked sites, while Sleeknote went from 0.04% to 0.03%. Sleeknote is gaining ground faster in our index.

2 websites in our catalog use both OptinMonster and Sleeknote.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.