Neural Network Academy

Neural Network Academy makes artificial intelligence hands-on, approachable, and genuinely fun. Whether you're a student, a curious adult, or a developer new to machine learning, this app guides you from "what even is a neuron?" to training real AI on your own photos — no experience needed. -- LESSONS -- Five bite-sized lessons cover the ideas behind every modern AI system: • What is a Neuron? - drag sliders and watch a single neuron compute in real time • Weights & Bias - see exactly how small number changes shift a network's output • Activation Functions - explore sigmoid and ReLU on live interactive graphs • How Networks Learn - follow a forward pass step by step with animated signal flow • Backpropagation - understand the algorithm behind every AI you've ever used Each lesson ends with a quiz that locks in what you've learned and earns XP to unlock the next tool. -- PLAYGROUND -- Train a real neural network on classic logic problems: XOR, AND, and OR. Watch the live loss curve fall as your network finds the pattern. Adjust layer count, neuron count, and learning rate - then hit Train and see the math work. -- NETWORK BUILDER -- Design your own architecture from scratch. Add layers, set neuron counts, and watch the signal flow forward through your custom network before training begins. -- HOT DOG LAB -- Draw examples directly on a pixel canvas, label them, and train a classifier on your own drawings. Works with any two categories you choose - a playful introduction to image classification. -- PHOTO CLASSIFIER -- The most powerful tool in the app. Pick two categories, add photos from your library, tap Train, and watch a real model learn to tell them apart. Test it instantly with any new photo. -- BUILT FOR LEARNING -- • XP & level system keeps you motivated and on track • Lessons unlock progressively - concepts build on each other naturally • Every idea has an interactive demo, not just a wall of text • Live training animations show loss dropping in real time • Clean native iOS design - no ads, no subscriptions, no account needed Neural Network Academy is for anyone who has ever wondered how AI actually works. Not just how to use it - how it thinks.