J Kosa App

Get a browser notification when J Kosa App releases a new app.

Apps: 6

Total installs: 9.5M

Avg rating: ★ 3.86

Ratings: 75K

Latest release: May 31, 2026

How this developer operates

Carrier title RAM Calc holds 100% of the developer's installs — a one-app developer
Hit rate 17% of launches reach 100k installs (1 of 6 at least 30 days old)
Release rhythm a new app every ~2.2 years on average
Maintenance 2 of 6 apps updated in the last 90 days · last update 34 days ago · updates every ~111 days

All apps

App	Style	Rating	Installs	Released
RAM Calc	Tools	★ 4.3	5,000,000+	Aug 31, 2015
00 Hourly Notice for wear	Productivity	★ 3.4	1,000+	Apr 6, 2024
Sub Launcher 2	Tools	—	1,000+	Jul 22, 2022
00 Hourly Countdown Chime	Productivity	—	100+	May 31, 2026
MemorAI - Your Study Companion	Education	—	100+	Apr 15, 2026
FIELD CAM - Scene Maker	Photography	—	50+	Apr 11, 2026