AI Neural vs PyLearn

AI Neural Network Primer is an interactive educational app that turns "neural networks" from abstract formulas into something you can play with hands-on. No AI background required, no internet needed — all models run in real time on your device. Just touch, observe, and uncover the secrets of deep learning step by step. From the first handwritten digit to the most cutting-edge large models, the courses take you from beginner to advanced: white-box visualizations let you literally "see" how data flows through every layer of the network, while hands-on training shows you why it works. 12 interactive models plus a live camera turn a textbook into an AI lab you can play with anytime. This app includes 6 fascinating courses: 1. Understanding Neural Networks Through a Single Digit Using handwritten digits as input, watch the entire forward propagation process in a white-box view — from pixels to recognition results. You can even train your first neural network yourself and witness every step as it goes from random guessing to accurate recognition. 2. What Is a Convolutional Neural Network Starting from a sample image, walk through the complete forward inference of a CNN from input to output. Follow the animation step by step to clearly see "convolution → activation → pooling → classification", and understand the core technology behind image recognition. 3. Mastering YOLO Object Detection Use the live camera or local photos to operate the YOLO model yourself and detect objects in the scene in real time. Experience real object detection technology running smoothly before your eyes. 4. Exploring Transformers Dive deep inside the Transformer model and interactively observe how text passes step by step through embedding, self-attention, and stacked Transformer blocks to finally generate coherent responses. The core of modern large language models, seen this clearly for the first time. 5. MoE: Mixture of Experts Explore the "Mixture of Experts" mechanism. Watch as the Router intelligently routes each token to the most suitable expert, and discover the secret behind how mainstream large models scale up and speed up. 6. Multimodal Large Models Experience image-text multimodal large models with SmolVLM: input an image and text at the same time, and observe how visual information merges with text to generate answers. Your gateway to multimodal technology. Why choose it: - White-box visualization: every layer and every step of computation inside the network is shown in real time — no more guessing - Hands-on learning: draw digits, pick images, turn on the camera, train models — learn while you play - Fully offline: pure on-device inference. Download models once, keep your privacy yours — zero privacy risk - Step by step: from CNNs to multimodal large models, 6 progressive courses that complete beginners can follow Whether you're a student getting started with AI, a teacher who needs visual explanations, or simply curious about neural networks — immerse yourself in a world of deep learning you can see and touch.

Real Python, running on your phone. Not quizzes about Python — an editor, an interpreter, and tests that check what your code actually did. Every lesson gives you a problem, a code editor and a Run button. You write Python, run it, and see the output and the failing tests. The interpreter is real CPython, bundled inside the app, so it works on a plane, on the underground, and anywhere else with no signal. WHAT IS IN IT • 12 courses, 108 lessons, from your first variable to shipping an AI system • 27 quizzes and 6 capstone projects, graded against hidden tests • 12 cheatsheets for the things nobody remembers • 12 badges, XP and a streak, for the days when momentum is the hard part THE PATH Start with Python Basics: variables, loops, conditionals, functions. Then data structures, functions and objects, files and errors, data analysis, APIs and async. Then the part most courses stop before: LLM APIs and prompting, structured output and tool calling, embeddings and vector search, RAG systems, agents and tool use, and evals and shipping. Real practice with the things AI engineering is actually made of. NO ACCOUNT NEEDED The app opens and works with no sign-up. Make an account only if you want your progress on more than one device — it syncs when there is a connection and waits patiently when there is not. BUILT FOR A PHONE • A code editor with line numbers, syntax highlighting and a punctuation row, because semicolons and brackets are miserable on a phone keyboard • Adjustable text size everywhere, including inside code • Hints when you are stuck and a worked solution when you have had enough • Dark and light, and it respects the size you read at Python runs entirely on your device — no server executes your code. Signed out, nothing you write leaves the phone at all. With an account, your work syncs so you can carry on somewhere else, and the tutor sees the lesson and your code in order to answer questions about them.