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HollerBox vs Sleeknote
People
Price
Published entry price
$49+per month
Popups and Overlays
Annual estimate10 people, entry price
$588+
Flat rate
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Popups and Overlays
Overview
Focus
Popups and Overlays
Popups and Overlays
Product
WordPress popup and notification tool with sales notifications, header bars, and slide-in forms for lead capture.
Lead capture and onsite engagement tool creating non-intrusive pop-ups, side-ins, and product recommendation overlays for ecommerce and B2B sites.
Headquarters
Remote
Aarhus, Denmark
Company size
2-10 employees
11-50 employees
Founded
2018
2014
Pricing details
Plan
Published entry price
Published rate
$49+ / month
Billable seats
Flat rate
Free options
Free trial
Pricing source
Source updated
Oct 29, 2026
Nov 1, 2026