Christian Albert Mueller.

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Apps: 3

Total installs: 13M

Avg rating: ★ 2.37

Ratings: 134K

Latest release: Aug 23, 2026

How this developer operates

Carrier title My Days - Ovulation Calendar & holds 74% of the developer's installs
Hit rate 50% of launches reach 100k installs (1 of 2 at least 30 days old)
Release rhythm a new app every ~14.7 years on average
Maintenance 1 of 3 apps updated in the last 90 days · last update 82 days ago

App	Style	Rating	Installs	Released
My Days - Ovulation Calendar &	Health & Fitness	★ 2.8	5,000,000+	—
MyDays X Women Cycle Calendar	Lifestyle	★ 2.0	1,000,000+	Dec 21, 2011
Undertow: One Stream	Music & Audio	—	1+	Aug 22, 2026