The short version
Infinite-canvas note-taking app in hyperbolic space.
From the HackerLinks archive
Poincake
Infinite-canvas note-taking app in hyperbolic space.
At a glance:
First seen:2026-06-06
Last seen:2026-06-06
Times seen:1
Website:uonr.github.io
Why it caught our attention
Commenters found the hyperbolic note UI intuitive enough to want on a tablet.
Where it surfaced on Hacker News
2026-06-06
Editorial paraphrase
People called it “weirdly intuitive” and said it would be “fantastic on a tablet”.
Original threadShow HN: Infinite canvas notes in the non-Euclidean Poincaré disk
Also surfaced in this discussion
HyperRogue
Show HN: Infinite canvas notes in the non-Euclidean Poincaré disk
2026-06-06