Matthias Kollmer

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Apps: 3

Total installs: 962K

Avg rating: ★ 4.70

Ratings: 3.2K

Latest release: Jun 12, 2026

How this developer operates

Carrier title Reading Lamp (Non-Profit) holds 70% of the developer's installs
Hit rate 67% of launches reach 100k installs (2 of 3 at least 30 days old)
Release rhythm a new app every ~4.2 years on average
Maintenance 0 of 3 apps updated in the last 90 days · last update 118 days ago

App	Style	Rating	Installs	Released
Reading Lamp (Non-Profit)	Tools	★ 4.9	500,000+	Dec 27, 2017
Baby Night Light (Non-Profit)	Parenting	★ 4.5	100,000+	Jun 21, 2019
Podcast Sleep Helper	Tools	—	50+	Jun 12, 2026