Blackfinch Mobile Apps

How this developer operates

• Carrier title Offline Currency Converter holds 64% of the developer's installs
• Hit rate 0% of launches reach 100k installs (0 of 3 at least 30 days old)
• Release rhythm a new app every ~3.3 years on average
• Maintenance 0 of 3 apps updated in the last 90 days · last update 96 days ago

Same company, other accounts · Sebastian Szczygiel

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

Listings that changed hands

App	Direction	Counterparty	When
Loan Calculator	renamed	Blackfinch	Nov 15, 2026
Get Rich: AI Coach & Quizzes	renamed	Blackfinch	Nov 12, 2026
Currency Converter	renamed	Blackfinch	Nov 11, 2026
Compass Pro	renamed	Blackfinch	Nov 11, 2026
Calories Food Calculator	renamed	Blackfinch	Nov 10, 2026
BrainScore - IQ Test	renamed	Blackfinch	Nov 10, 2026
BMI Calculator	renamed	Blackfinch	Nov 10, 2026
Age Calculator - Date of Birth	renamed	Blackfinch	Nov 9, 2026
Age & Date Calculator	renamed	Blackfinch	Nov 9, 2026
Weight Tracker+ BMI Calculator	renamed	Blackfinch	Nov 8, 2026
TextCount AI Word & Letter	renamed	Blackfinch	Nov 7, 2026

All apps

App	Style	Rating	Installs	Released
Offline Currency Converter	Finance	★ 4.7	50,000+	Jan 14, 2020
Percentage Calculator	Tools	—	10,000+	Jul 25, 2020
Phone Blocker: Phone Addiction	Productivity	—	1,000+	Jul 27, 2026