PocketCosmos vs Twinkleton

PocketCosmos employs a real-time gravitational computation engine, accurately simulating celestial motion in a SceneKit 3D environment. Technical Specifications: - Gravity formula: F = G x M x m / r2, real-time N-body simulation - Rendering: SceneKit + Metal, smooth 60fps performance - Scenarios: 8 curated astronomical simulations - Data source: Parameterized from NASA/JPL public datasets 8 Simulation Scenarios: 1. Solar System Panorama - all planets in proportional orbits 2. Inner Planets - close observation of Mercury through Mars 3. Outer Planets - Jupiter to Pluto orbital dynamics 4. Asteroid Belt - dozens of asteroid distribution simulation 5. Jupiter System - Galilean moon orbital mechanics 6. Pluto System - elliptical orbit and Charon tidal locking 7. Gravity Slingshot - probe acceleration effect demonstration 8. Solar System Top View - global perspective planetary alignment Education Module (6 topics): - Law of Universal Gravitation - Kepler's Three Laws - elliptical orbits, area law, period law - Tidal Locking - synchronous rotation mechanism - Roche Limit - critical disintegration distance - Supernova - stellar evolution final stage - Lagrange Points - three-body gravitational equilibrium Requirements: iOS 17.0+ | iPhone only Privacy: Zero data collection, fully local execution

Twinkleton is a gentle, beautiful astronomy playground for curious explorers (ages 5–10). Spin a real 3D solar system in your hands, sit back for a movie-like flight past every planet, and discover how space works through playful, hands-on lessons — all guided by Luma, a friendly little astronaut. EXPLORE IN 3D • A real-texture Sun, eight planets, Pluto, the Moon, Saturn's rings and the Milky Way • Drag to orbit, pinch to zoom — like holding the solar system in your hands • Tap any planet to fly to it and open a friendly fact card • Slow it down, speed it up, or rewind time to watch the planets dance A MOVIE OF THE SOLAR SYSTEM • Immersive mode plays a calm, cinematic fly-through — drifting in from far away, then visiting each planet up close with gentle music LEARN BY DOING Ten interactive lessons turn big ideas into simple play: • Why we always see the same face of the Moon • Why you float with a tiny jump on the Moon (1/6 gravity) • How far the Sun is — light takes 8 minutes to reach us • How many Moons fit inside the Earth • Which planet is hottest (surprise — it's not the closest one!) • How much you'd weigh on every planet • What a satellite is — natural vs. man-made • How long a day lasts on other worlds • Solar and lunar eclipses, seen from space AND from Earth • A deck of cosmic fun-facts SAFE, GENTLE & AD-FREE • Fully bilingual — English and 繁體中文, switch anytime • Friendly voice narration reads every fact aloud • No ads, no links out, and no sign-up — privacy-first, anonymous analytics only • Works on iPhone and iPad Distances and sizes are scaled down so everything stays fun and visible — a toy model of the real thing, built to spark wonder.