Eastern wisdom,
written in <code/>
I'm Manh — a part-time indie dev. I build feng shui & I Ching apps for iOS and Android: fully offline, ad-free, and collecting zero data.
Three apps, one philosophy
Serious feng shui tools for professionals and everyday users — tap any app for details.
Cast Ngũ Linh hexagrams in seconds — the primary and changed hexagrams and the time-swap method, based on Cao Từ Linh's system.
A practitioner-grade sensor Luopan — 24 Mountains, Xuan Kong Flying Star, orientation on photos and maps.
Three feng shui rulers in one app: Clear Opening, Yang Dwelling and Yin Dwelling — measure with confidence.
$ cat manifest.md
Every calculation — hexagrams, bearings, measurements — happens on-device. No servers, no signal needed.
No accounts, no tracking, no analytics. Your data stays on your phone — literally.
These tools exist for serious work, not banner space. Clean, focused experience.
Recent notes
Feedback, questions, or just saying hi?
I read every email — usually reply within a day or two.
get in touch →