ARYVYN

LABS

Apps worth keeping.

Our AppsGet in Touch
Our approach

Small team.
Real problems.
Lasting software.

Aryvyn Labs builds focused apps for people navigating real-life moments — learning a language, passing an exam, managing a household. We don't chase scale for its own sake. We build tools that are useful, private, and honest.

Built from need
Every app we build started as something we personally needed. If we don't use it, we don't ship it.
Privacy by default
User data stays on the device. No analytics SDKs. No advertising infrastructure. Ever.
Free or fair
Our apps are free — not free-with-ads, not free-tier-with-paywall. The whole thing, free.
Ship and maintain
We build things we intend to keep alive. Not experiments. Not abandonware.
Apps

What we've built

PassDE

German citizenship test preparation. All 310+ official questions, unlimited mock exams — offline, free, no ads. Flip any question or answer to English independently.

iOSOfflineFreeEinbürgerungstest
Coming Soon
Something for your vocabulary

A smarter way to build German vocabulary — offline, level-based, and designed to actually make words stick. Learn at your pace, review what matters.

EducationalOfflineSpaced repetition
In the forge

More apps in the forge — solving problems across home, language, and everyday life.

Get in touch

We read everything.

Questions about our apps, feedback, ideas, or just want to say hello — reach out. We're a small team and we take every message seriously.

Contact Developer

Social media — coming soon

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