Hormone intelligence platform
2026
A native iOS app, in build. It reads hormone data and makes it legible to the person it belongs to. The name isn’t settled yet.
Leander Dörner
I run a web studio, and I ship my own software.
Hamburg and Exeter. Fixed-price sites for businesses that need one, and a shelf of tools I built because I needed them.
Studio
Moin Websites
A web studio in Hamburg, run by two of us. We take a business from the first call to a shipped site: design, build, deploy, at a fixed price, with no page builder underneath. Clients keep ownership of their domain, hosting and email, which is the part most agencies quietly keep.
- Where
- Hamburg, Germany
- Who
- Two people
- Model
- Fixed price, no retainer
- Clients keep
- Domain, hosting, email
- Status
- Operating, with customers
Also shipped
Tools I use every day, and one app in build.
Design Vault
2026
A native macOS front end for a design reference library: waterfall grid, families as tabs, colour extraction, and a composer that turns a selection into one build prompt.
claude-usage-bar
2026
A macOS menu-bar widget for what’s left of a Claude subscription. Live percentage and prompts, with a local fallback when the API is unreachable.
YouTube Transcripts
2025
Pulls a YouTube transcript out as clean Markdown and downloads the video as MP3 or MP4. Built because I needed it daily; mine holds 690.
Where it starts
Before any of it, a soapbox car.
I was nine. A tin of red paint and no idea what I was doing. An electric go-kart followed in tenth grade: tube frame, battery pack, no engine. Then the work moved from steel to software without really changing.
About
My own projects I build alone, and I stop the ones that don’t work.
I’m Leander Dörner. I’m nineteen, German, based in Exeter. I’ve been finishing things since 2016, first machines and then software, and the studio is where that turned into a business with customers rather than a habit.
Contact
If you’re building something, or backing someone who is — write to me.
Investment, collaboration, a project you want built, or a question. There’s one route in and I read all of it myself.
leander.doerner@gmail.com