~/quantcorp · a builder's lab · run by Daniel Öhgren
I build the software I wish existed. Right now that's a BJJ tracker, an Obsidian companion, and a warranty keeper for receipts I'd otherwise lose. Side project, evenings and weekends — not a startup, not raising, not hiring.
// products
A handful of things in flight. Built solo, on no one's deadline.
The BJJ tracker for people who actually show up.
Log your rolls, spot your patterns, and see the work compound. No streak gimmicks, no gamification noise. Just honest data for people who care about their craft on the mat.
Your mat. Your data. Your porrada.
Your Obsidian tasks, anywhere.
A web-first companion for Obsidian. Install the plugin, pair with a code, and your tasks show up on any browser. Smart reminders, no vault on every device, no polling hacks.
Never lose a warranty again.
Snap a receipt, the app pulls out the details. Get reminded before expiries hit so you can actually claim. Consumer-first, but works for small business too. iOS and Android.
// lab
Agent experiments, homelab tooling, and ideas still too early to name. When something sticks, it graduates.
// how I work
I don't build for everyone. I build for people who care about their tools as much as they care about their craft. Every feature earns its place.
01
Something useful today beats something perfect never. Real users, real feedback, real loops.
02
No dark patterns. No bloat. No analytics harvesting. If a feature doesn't help you, it shouldn't exist.
03
The best tools come from people who actually need them. I build what I need, then share it.