About Hakan Özger Studio

Hakan Özger Studio is the one-person studio of Hakan Özger, an independent developer who designs and builds small, focused apps and games for iPhone, iPad, Mac and Android. Every app on this site is designed, written and supported by him.

Apps

• Protocol 4 — Break codes by pure logic, then duel other operators in real time.
• Number Guess — Crack a code of all-different digits, alone or head-to-head.
• Quick Math — Fast-paced math training to sharpen your speed and reflexes.
• Optio — An ad-free, cyberpunk decision maker powered by Opsis AI.
• IconSync — Resize and sync app icons for Xcode and Android in one step.
• GarbageCollector — A safe Mac cleaner that lets you undo every cleanup.

How the apps are made

• Small and focused: each app does one thing and tries to do it well.
• Honest: real App Store ratings on this site, clear pricing, and privacy policies for every app.
• Updated in the open: every app has a public version history on this site.

Contact

For questions, bug reports or ideas, use the support page.