Small, private apps,
made with care.
KLL Dev builds focused apps for the niches bigger players overlook: sharper than the alternatives, and shaped by direct feedback from the people who use them.
Our apps
Strolla
Your city, explained. A map-first walking companion with generated routes, stories narrated on arrival, and point-to-know. Offline, in 9 languages.
iPhone
Vokabo
Learn the words you choose: capture, lock them in, and chat with on-device AI. Private by design.
iPhone & iPad
Airline Executive
Build a fictional airline across the decades: routes, fleet, rivals and a living world. A deep, calm management sim.
iPhone, iPad & MacHow we build
- Private by design. Your data stays on your device or in your own iCloud. We never collect it.
- On-device intelligence. Translation and AI run locally: fast, offline, and yours.
- No bloat. Just the part that works. No streaks shouting at you, no ads.