Turn physics equations into understanding you can actually use.
Start with vectors and units, then move through kinematics, Newton's laws, rotation, gravitation, and electromagnetism. Original cards, worked examples, and practice show why every equation works and when to use it.
How it teaches
Not memorising formulas, but building understanding you can transfer.
Original knowledge cards
Each card builds intuition first, then gives the definition, equation, and conditions of use. Every example and figure is redesigned from scratch.
Layered practice
Multiple choice, free response, and multi-step items. Explanations name the tempting mistake, not just the answer.
Formula and term reference
Search formulas, terms, and problem-solving tips by chapter.
Works offline
Lessons are cached on the device after download, so you can keep learning without a connection.
Three languages
Traditional Chinese, Simplified Chinese, and English; change it in Settings or follow the phone.
No login
No account and no advertising SDK. Learning progress stays on your device.
The complete path
16 chapters: build mechanics intuition first, then move into fields and circuits.
Start with Chapter 1 and build the foundation for the whole book
Chapter 1 builds vectors, components, dot and cross products, and dimensional analysis. Chapter 2 derives uniformly accelerated motion with calculus and extends it to projectiles, relative motion, and circular motion. Every later chapter uses the same way of thinking.