Rocket Watch
Jellyfish Effect Launch Alerts
About
This app tracks upcoming rocket launches with live countdowns and current weather. It uniquely predicts the chance of seeing a 'jellyfish plume' effect, a luminous glow caused by rocket exhaust catching sunlight at dawn or dusk.
What's New in Rocket Watch
2.1.9
October 15, 2026
• New: "Jellyfish Potential" for launches just outside the glow window, with alerts. • Launch alerts now refresh in the background, so new and rescheduled launches aren't missed. • Free trial extended through January 31, 2027, with a heads-up before it ends.
MoreSubscriptions & In-App Purchases
Monthly
Rocket Watch access for this Apple ID, billed monthly.
Developer apps
FAQ
What is the jellyfish plume feature in Rocket Watch?
The jellyfish plume feature in Rocket Watch calculates the potential for a luminous, jellyfish-shaped glow in the sky caused by a rocket's exhaust catching sunlight during dawn or dusk launches. This is based on public twilight data.
Does Rocket Watch have ads?
No, Rocket Watch is ad-free. The developer states there are no ads, and no account is required or data collected.
How does Rocket Watch notify users about launches?
Rocket Watch provides local notifications at 72 hours, 1 hour, and 10 minutes before liftoff. The 10-minute alert includes real-time sky conditions for the launch.
What devices is Rocket Watch compatible with?
Rocket Watch is available on Mac, iPhone, and iPad, making it accessible across multiple Apple platforms.
How often is Rocket Watch updated?
The app was last updated on September 5, 2026, to version 2.0. This indicates active development and support for new features.
What is the pricing for Rocket Watch?
Rocket Watch is free to use. An optional paid version is available to unlock Live Activities, Notifications, and Widgets, supporting the app's development.
Can I track launches offline with Rocket Watch?
The provided description does not specify offline functionality. However, features like live countdowns and real-time weather typically require an internet connection.
What is the age rating for Rocket Watch?
Rocket Watch has an age rating of 4+, making it suitable for a wide range of users interested in space exploration.
