KDN Studio is an indie mobile studio building with Viking resolve — thoughtful, sturdy, beautifully crafted apps for everyday life. A small crew, sailing toward big ideas.
Forged with care, built for real life
Sleep like a warrior after battle. Slumbr studies your sleep cycles and rouses you at the perfect moment — rested and ready to conquer the day, not groggy.
View on App StoreA clean, distraction-free timer for the kind of focus a shield-wall demands. Set your sessions, track your streaks, and build unstoppable momentum, one sprint at a time.
View on App StoreForge routines that hold like iron. Track daily habits, watch your streaks grow, and celebrate small victories. Simple by design — powerful by habit.
Coming SoonFrom idea to App Store — our voyage
We start with real needs — scouting for problems people genuinely struggle with daily, like a captain reading the sea before a voyage.
We hammer out simplicity and feel — crafting interfaces as sharp and true as a well-forged blade, intuitive from the very first tap.
We launch, listen to our crew of users, and keep iterating. No legend was ever written in a single voyage.
Three apps — forged for your daily rhythm
Slumbr
Focusy
HabitKit
Real reviews from the App Store
"This app is exactly what I needed. Tracking my blood pressure has never been this simple. The charts make it so easy to see patterns over time."
"Clean interface, no clutter. I log my readings every morning and love seeing the weekly summary. Highly recommend for anyone monitoring their heart health."
"My doctor suggested I keep a blood pressure journal and this app is perfect. Easy to add readings, export data, and the design is beautiful."
"Simple, fast and reliable. I've tried several BP tracker apps and this one stands out. The HRV and oxygen tracking are a great bonus."
Set sail — available for free on iOS.
We're a small crew with big ambitions. Every app we build starts with a real problem and ends with something people genuinely enjoy using. Craft over complexity — that's our code of honor, always.