By vs RealTime Space

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.

Strap in. RealTime Space puts you at the helm of your own starship in a photoreal, full-scale universe — every planet, every major moon, and 8,920 real stars, all in the palm of your hand. FLY ANYWHERE Real navigation physics with thrust, drift and 100x warp. Skim Jupiter's storms, cruise through Saturn's sunlit rings, chase comets across the system, or point the nose at a star and just go. A REAL SKY Every star you see is real — 8,920 naked-eye stars with their true names, brightness and 3D positions, plus the Milky Way band exactly where it belongs. Fly to Sirius, Betelgeuse or Vega and watch a point of light resolve into a blazing sun. THE WHOLE SOLAR SYSTEM All eight planets in photoreal detail, the Moon, volcanic Io, icy Europa, hazy Titan, Enceladus and its geysers, the asteroid belt, famous comets, deep-space nebulae — and Sagittarius A*, the black hole at the center of the galaxy. THREE WAYS TO FLY VISOR — a clean, unobstructed view of space. HELM — a full cockpit around you. CHASE — follow your own ship from behind. SCAN AND DISCOVER Scan planets, moons and stars to fill your Field Guide, track your journey on the Space Map, and complete missions as you explore. MADE TO FEEL REAL Analytic eclipse and ring shadows, real star colors, a procedural engine soundscape, and a sky accurate enough to learn constellations from. FREE FOR 60 DAYS Everything is free for your first 60 days. Keep the whole universe forever with a single $1.99 unlock — no subscription, no ads, no account, no data collection. WORKS WITH VOICEOVER Every control is labeled — thrust, warp, the joystick, the camera views and the fly-to list — so the ship can be flown with a screen reader turned on.