LABsterzz

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Apps: 2

Total installs: 1.1M

Avg rating: ★ 4.47

Ratings: 17K

Latest release: Apr 15, 2026

How this developer operates

Carrier title English Grammar Test holds 100% of the developer's installs — a one-app developer
Hit rate 50% of launches reach 100k installs (1 of 2 at least 30 days old)
Release rhythm a new app every ~11.7 years on average
Maintenance 0 of 2 apps updated in the last 90 days · last update 205 days ago

App	Style	Rating	Installs	Released
English Grammar Test	Education	★ 4.5	1,000,000+	Aug 12, 2014
Learn English: Grammar & Test	Education	—	50+	Apr 15, 2026