Grumsen Development ApS

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Apps: 4

Total installs: 177K

Avg rating: ★ 4.43

Ratings: 3.1K

Latest release: Oct 21, 2026

How this developer operates

Carrier title Find My Car - Vehicle Tracker holds 96% of the developer's installs — a one-app developer
Hit rate 33% of launches reach 100k installs (1 of 3 at least 30 days old)
Release rhythm a new app every ~2.7 years on average
Maintenance 4 of 4 apps updated in the last 90 days · last update 19 days ago

All apps

App	Style	Rating	Installs	Released
Find My Car - Vehicle Tracker	Maps & Navigation	★ 4.4	100,000+	Sep 13, 2022
Never Have I Ever - Party Game	Entertainment	—	5,000+	Sep 24, 2018
FerryLive: Fanø & Esbjerg	Maps & Navigation	—	100+	Aug 29, 2025
Firmaradar NEW	Business	—	0+	Oct 21, 2026