Year Journey
Track your year’s progress with illustrated animal companions on your Home Screen.
Every day, by your side.
Stannum is an independent app studio creating playful tools for focus, time, and everyday creativity.
Apps
Explore our two apps available on the App Store, with another in development.
MiniTime
A minimal focus timer for everyday routines, controlled with a simple tap and drag.
In Development
MewCanvas
Let a cat hold the brush, so your finger never hides the line you’re drawing. Create a picture, display it in the cat’s home, and capture a keepsake to share.
About
Stannum is an independent app studio founded in October 2025 and based in South Korea. I’m Jeongseok Ko, its founder, and I lead product planning, design, development, and marketing.
I create apps that combine useful everyday tools with original illustrations and characters. Year Journey and MiniTime are already available on the App Store. Building and releasing them helps me learn from real users and refine the experiences I create.
My main focus is MewCanvas, a drawing app that keeps your finger from covering your artwork by letting a cat’s paw hold the brush. Its development is nearing completion.
- Registered business
- Stannum
- Founded
- October 2025
- Based in
- South Korea
- Founder
- Jeongseok Ko
My ideas often begin with something I notice or feel in everyday life. I like bringing small features to life through drawings, characters, and stories.
I hope the care I put into them comes through as a little warmth when you use them.
