Gravity Courier: Orbit Puzzle
Orbital puzzle in space
Free · In‑App Purchases
You are a space delivery controller. Your only job: choose when, which way, and how hard to launch — then let gravity do the rest.
Gravity Courier is a minimalist orbital puzzle built on real physics. The Sun, planets, and moons are genuinely orbiting in real time. There is no joystick, no thrust-and-steer. You read the dance of the planets, pull back a slingshot to aim, pick the launch moment, and fire. From there, gravity alone bends your probe's path — so a straight shot will never work. Predict the curve, use a planet's pull, and arrive exactly on target.
WHY IT FEELS DIFFERENT
• Real orbital mechanics — Keplerian planet motion + true n-body gravity on your probe. Deterministic, fair, and endlessly satisfying to "solve."
• One decision, infinite depth — only date, direction, and thrust. Easy to grasp, hard to master.
• A living solar system — Mercury to Neptune orbit at their own speeds. Change the launch date and the whole board lines up differently.
MISSIONS ACROSS THE SOLAR SYSTEM
• Orbit — loop a planet or moon without escaping or crashing
• Flyby & return — swing around the Moon's far side and let gravity sling you home
• Landing — enter a gravity well and settle into a soft touchdown
• Reach — time an interplanetary transfer to meet a moving planet where it will be
• Gravity assist — skim a giant planet and steal a free push
• Orbital cleanup — ram drifting space debris before it spreads
FEATURES
• 90+ handcrafted missions across the Sun, Moon, Venus, Mars, Jupiter, Saturn, and the outer planets
• Predicted-path preview with a closest-approach marker — line up the gap and you'll hit
• Reserve a mid-flight boost on your trajectory, or fire it by hand
• Star ratings reward fuel economy and fast transfers — chase that 3-star run
• Replay any flight and share it as a trajectory image card
• Clean, quiet, starfield aesthetic with a calming soundtrack
• 13 languages
• Play offline
• One-time "Remove Ads" available
No timers pushing you. No pay-to-win. Just you, the planets, and one perfect launch.
Read the orbits. Launch right. Safe orbits, courier.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Learn how to break free of Earth!
- Improved Venus tutorial: launch at full power, then boost right after launch to escape Earth.
- Venus and Mars mission briefings now include Earth-escape tips.
- If you can't escape Earth and hit the Moon, we now tell you why and how to fix it.
- Relaxed the fuel limit on the Venus fuel-saving mission.
The developer, Jegeon Jung, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jegeon Jung
- Size
- 32 MB
- Category
- Simulation
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- 광고제거 $1.99
- Copyright
- © 2026 Jegeon Jung
