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Firebase App Check on new websites

Name: Firebase App Check adoption on new websites
Creator: StackScope

Google attestation service to verify requests come from your app.

#8 of 398 in Security In our data since Apr 2026 Last seen: Oct 16, 2026 Most recent launch: Ninja Uzi Sushi, Oct 16, 2026 Website: firebase.google.com

2,697 sites

2,447 found by StackScope, 250 via launch platforms

StackScope Discovery (Indie) 1,326
StackScope Wider Web 1,121
Product Hunt 193
Other 23
PeerPush 19
Hacker News 15

View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web

Firebase App Check appeared on about 610 new sites in the last 30 days.

These figures cover websites that went live since April 2026, not the web as a whole.

Stackdar alerts

Get told when a new site ships with Firebase App Check.

612 new sites with Firebase App Check first seen in the last 30 days.

Stackdar watches every launch we detect and sends you the ones using Firebase App Check, by email, Slack or webhook. On every plan, from £15 a month.

See how alerts work

Share of new sites using Firebase App Check

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026.

0.0%

last 7 days

-0.0pp vs prior week

0.0%

30 days to Oct 15

-0.0pp vs 30 days before

2,697

sites all time

since Apr 2026

Mar 30, 2026 90 days Oct 15, 2026

The shaded areas were measured against a different set of sites, so the line can step there without Firebase App Check itself changing.

Coverage details

Before the dashed line where the dots begin, the line is a weekly average. After it, the last 90 days are shown one day at a time.

Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well.

Amber: 8 July to 10 September 2026, before we improved our infrastructure to index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from 10 September. We record each site as it was when we found it.

The share is a proportion of whatever we were tracking at the time. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

What kind of sites use Firebase App Check

1,158 sites with a known type, all time

Productivity

14.9%

Education

13.9%

Health

10.7%

Social

10.4%

Games

9.9%

Finance

8.4%

E-commerce

7.1%

5.0%

Content

4.4%

Marketing

4.2%

Developer Tools

4.0%

Hiring & HR

3.1%

Domain endings using Firebase App Check

2,697 sites, all time

.com 50.4%
.app 16.0%
.in 3.5%
.ai 2.7%
.io 2.5%
.online 2.5%
.org 2.5%
.net 2.3%
.fr 2.1%
.ca 1.4%
.uk 1.4%
.xyz 1.2%
.co 1.1%
.site 0.9%
.me 0.8%

Country

Country likely for 404 of 2,697 sites (15%), all time.

How we know

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. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.

India 17.8%
France 13.9%
United Kingdom 9.9%
United States 8.9%
South Korea 7.2%
Canada 5.7%
Japan 5.2%
Slovakia 3.5%
Türkiye 2.7%
Brazil 2.2%
Spain 2.2%
Germany 2.0%
Ukraine 2.0%
Sweden 1.7%
Switzerland 1.5%

Green hosting

250 checked sites since Apr 2026.

What this means

The share whose web host The Green Web Foundation lists as running on green energy, against the average for every new site we checked.

Firebase App Check 70%
Average 47%

Security leaders

		Tool	% of sitesall time	% of categoryall time
#1	–	HSTS	47.4%	87.7%
#2	–	Cloudflare Bot Management	13.6%	25.2%
#3	–	Google reCAPTCHA	1.9%	3.5%
#4	▲1	Anubis	0.1%	0.2%
#5	▼2	DDoS-Guard	0.1%	0.2%
…
#8	▼1	Firebase App Check Current page	<0.1%	0.1%

Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any Security tool.Firebase App Check is typically used alongside HSTS rather than instead of it. All 398 in Security →

Often used with

Tool	Sites	vs all new sites
Firebase	2,674	87x
Google Sign-In	1,017	22x
Fastly	1,583	21x

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

Recent launches using Firebase App Check

1,576 of the 2,697 sites using Firebase App Check are product launches we list individually. The other 1,121 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts. How StackScope Discovery works

Ninja Uzi Sushi Oct 16, 2026 Also detected