Ultimate Drill Book

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Apps: 6

Total installs: 260K

Avg rating: ★ 3.33

Ratings: 809

Latest release: Jun 30, 2026

How this developer operates

Carrier title UDBapp Pro holds 56% of the developer's installs
Hit rate 17% of launches reach 100k installs (1 of 6 at least 30 days old)
Release rhythm a new app every ~1.2 years on average
Maintenance 4 of 6 apps updated in the last 90 days · last update 4 days ago · updates every ~28 days

All apps

App	Style	Rating	Installs	Released
UDBapp Pro	Education	★ 4.3	100,000+	Jun 20, 2020
UDBapp: Powered by Arc	Education	★ 4.0	50,000+	May 13, 2026
Beam Music	Education	★ 3.7	10,000+	Jul 14, 2022
Geo: Powered by Arc	Education	★ 2.0	10,000+	May 28, 2026
Beam: Powered by Arc	Education	★ 2.7	10,000+	Jun 30, 2026
StrideTV	Entertainment	—	1,000+	Jun 16, 2023