Chitok Chinese vs FrankenSim

Chitok helps English-speaking learners build practical Mandarin skills through short, focused lessons. Learn daily Mandarin words and Chinese idioms with clear audio, pinyin, English meaning, guided reading, speaking practice, and writing practice. Save useful words and idioms to your vocabulary notebook, then review them with a daily self test. Chitok is built for learners who want Mandarin that feels useful outside the textbook: travel, food, first conversations, everyday phrases, and real spoken practice. Features: Daily Word and Chinese Idiom lessons Listen, Speak, Read, and Write practice modes Pronunciation audio with normal and slow playback Pinyin, English meaning, and usage guidance Stroke-based writing practice Saved vocabulary notebook Daily self test for saved vocabulary Free users can try Daily lessons for three days. Chitok Pro unlocks continued Daily Word and Idiom lessons, pronunciation audio replays, full writing practice, vocabulary saves, and Self Test. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Carry a working numerical laboratory on your iPhone, iPad, or Mac. FrankenSim contains forty-three native experiments drawn from the FrankenSim Rust workspace. Each one runs a real local kernel and pairs the result with an interactive visualization and a concise account of what was computed. Explore heat diffusion, spectral waves, Lorenz dynamics, Gray-Scott reaction diffusion, fluid flow, smoke, topology optimization, signed-distance geometry, isosurfaces, Gaussian-process optimization, randomized linear algebra, symplectic orbits, computational geometry, interval-certified fractals, and more. The library is organized from foundations through deep experiments, end-to-end campaigns, and three larger flagships. Evidence labels distinguish a computed result from an illustration, approximation, bound, or certified conclusion. The theory atlas explains the equations and numerical ideas behind the displays. Every experiment runs on the device. FrankenSim has no account, advertising, tracking, cloud compute, or required network connection.