Efficient Tool Lab

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Apps: 11

Total installs: 82K

Latest release: Oct 13, 2026

How this developer operates

Carrier title Math Calculator holds 59% of the developer's installs
Hit rate 0% of launches reach 100k installs (0 of 9 at least 30 days old)
Release rhythm a new app every ~133 days on average
Maintenance 3 of 11 apps updated in the last 90 days · last update 8 days ago · updates every ~9 days

Same company, other accounts · MICHAEL JOHN KOTCH

Developer names that share this developer's legal name, contact e-mail or website in the store.

Photo Video Ltd 4 · 369K

Listings that changed hands

App	Direction	Counterparty	When
CleanHub - Cleaner & Tools	→ handed over	NovaBytes Labs	Oct 21, 2026

All apps

App	Style	Rating	Installs	Released
Math Calculator	Tools	—	10,000+	Sep 25, 2024
Weather: Daily Compass	Tools	—	5,000+	Jul 23, 2025
Classic Calculator	Tools	—	5,000+	Sep 29, 2024
معجزات الأنبياء والرسل	Education	—	5,000+	Jul 5, 2023
Prime Wallpaper - 4K & Dynamic	Tools	—	1,000+	Jan 28, 2026
Simple Calculator	Tools	—	1,000+	Oct 7, 2024
ViggoAI - AI photo & Video	Tools	—	1,000+	Sep 10, 2026
UniTransfer – Phone & PC	Tools	—	1,000+	—
Budget Tracker: Daily Expenses	Finance	—	500+	Jan 12, 2026
Efficient Calculator	Tools	—	100+	Oct 8, 2024
Trackio - Location Tracker NEW	Maps & Navigation	—	1+	Oct 13, 2026