Observed arrival · 2026-11-10
Sophiastra: notes with a third dimension
A note-taking app that arranges topics in a 2D hierarchy and lets you view their layers in 3D.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People organizing layered notes and open questions
- Worth noticing
- Its suggested hierarchy uses prompts such as “why?” and “for example?”; empty levels mark what remains unclear.
Field notes
Topics can be arranged vertically, placed beside one another, or nested beneath another topic; the page describes these as ways to separate related ideas, side topics, and deeper material. A topic can also hold a chronological sequence of chat-like entries. The site lists Mac and Windows downloads alongside a browser version, and its update notes show frequent revisions to features including question folders and quizzes.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue