By vs Neural Network Academy

The Physics of Stars — in your hand. By-Pass is an interactive physics laboratory that brings the fascinating complexity of Newtonian mechanics to your iPad and iPhone. Here, you become the architect of orbital systems and watch simple forces give rise to highly complex mathematical patterns. Unlike simple animations, By-Pass uses its own physics engine with a simulation rate of 60 Hz to calculate real gravitational interactions accurately and without compromise. The physical core: Master of Orbits: Create satellites and planets with intuitive gestures. Use drag gestures to define the initial launch velocity and watch as objects settle into stable orbits or drift away into the vastness of outer space. Dynamic Gravitational Centers: Choose between 1, 2, or 3 suns. Experiment with the unstable and fascinating solutions of the famous three‑body problem. Each additional center dramatically alters the gravitational field and sends your planets onto unpredictable, dancing trajectories. Variable Gravitational Exponents: Switch between a fully realistic simulation (exponent 2.0) and modified fields for extremely long‑lasting, geometric path traces. Precision & Performance: Experience the simulation with a render target of 120 FPS. The physics runs independently at 60 Hz, ensuring smooth visuals even in the most complex systems. Procedural Matter: Each planet (Rocky, Lava, Gas, Ocean, Icy) is generated at runtime and behaves as a discrete physical entity within the simulation.

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.