iOS · iPadOS · macOS
In developmentIdeas, notes, and learning in one app
Kuaiyizhi App is the pocket companion to this site: capture a thought, shape it in a note tree, then make it stick through reading, read-aloud practice, and quizzes.
Still in the workshop
Kuaiyizhi App is still in development. It is not on the App Store yet, and we are not offering downloads. We will announce availability here when it is ready.
What's inside
From a single thought to knowledge of your own
Notes, reading, and practice live together, so you do not have to move things between tools.
Note tree
Organize notes and sub-documents as a tree, letting scattered ideas grow into a system.
Write freely
Headings, lists, code blocks, tables, to-dos, images, and handwriting, whatever the thought needs.
Picture books
Read picture books on iPhone, iPad, and Mac, with layouts that adapt to the screen.
Read aloud
Listen to a model, record your own reading, and compare on-device. Your voice stays on your device.
Practice after reading
Move straight from a page into exercises and quizzes to check what actually landed.
Continue anywhere
Keep notes in sync across Apple devices through iCloud, so you can pick up where you left off.
Built for Apple devices
Kuaiyizhi App is made for iPhone, iPad, and Mac. It keeps the lightweight reading experience of the site while putting local-first notes at the center.