Heureka on new websites

1. Heureka appeared on about 51 new sites in the last 30 days.^[1]
2. Nine in ten new Heureka sites also use Google Tag Manager.

The line is the 7-day average share of new sites that use Heureka, since 10 September.

#	Movement	Tool	Share of all sites	Share of category	Bar
1	–	Judge.me	0.6%	45.6%
2	–	Trustindex	0.2%	17.7%
3	–	Loox	0.1%	11.0%
4	–	Trustpilot	0.1%	6.7%
5	–	MKP Google Reviews Widget	<0.1%	2.7%
…
32	▼4	Heureka	<0.1%	0.2%

All-time shares across the new sites we track: of all of them, and of the sites using any Reviews tool. Among September launches it ranked #33 in Reviews, down from #29 in August. All 296 in Reviews

Tool	Sites with both	vs all new sites	Bar
Facebook Pixel	86	21x
Google Analytics	108	8.6x
Google Tag Manager	110	7.7x
jQuery	89	5.2x
PHP	83	4.1x

Tools that turn up far more often on Heureka sites than on new sites in general, and how many times as common each one is there.

2 of the 122 sites using Heureka are product launches we list individually. The other 120 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.

Site	Found	Also detected
ProvozníKarta.cz | Jaký a kolik oleje, filtry, pneumatiky a servisní plán podle motoru autodatacard.com · Czechia	Oct 19
Niro3D niro3d.cz · E-commerce · Czechia	Apr 30

Watches, exports and the API give you all 122 sites using Heureka, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.
2. Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. We count a country only where it is stated plainly enough to be sure: a governing-law clause or company registration number on a legal page, a phone country code, or a country domain ending. Sites that publish none are not counted at all.