EconGraph LAB vs Neural Network Academy Lite

Multiple models: Demand-Supply, Tax/Subsidy, Price Controls, Monopoly, PPF, AD-AS, IS-LM, Externality, Labor Market, Lorenz Curve, and more - Instant visual feedback when changing parameters - Policy Lab to compare before/after outcomes against a baseline - Interpretation panel and guide for concept-focused learning - Notes for saving class and study snapshots This app is an educational support tool and does not provide investment or policy advice.

Neural Network Academy Lite 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 and 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 Lite is for anyone who has ever wondered how AI actually works. Not just how to use it -- how it thinks.