QSTAG Inc.

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Apps: 3

Total installs: 11K

Latest release: Apr 29, 2026

How this developer operates

Carrier title QSCheck - Urine Test Reader holds 100% of the developer's installs — a one-app developer
Hit rate 0% of launches reach 100k installs (0 of 2 at least 30 days old)
Release rhythm a new app every ~6.1 years on average
Maintenance 1 of 3 apps updated in the last 90 days · last update 20 days ago · updates every ~73 days

Developer names that share this developer's legal name, contact e-mail or website in the store.

App	Style	Rating	Installs	Released
QSCheck - Urine Test Reader	Health & Fitness	—	10,000+	Mar 8, 2020
QuietHabit - Urine Tracker	Health & Fitness	—	10+	Apr 29, 2026
큐에스리더 (QSREADER) – 전기화학 계측기	Health & Fitness	—	10+	—