Rocket Watch

Jellyfish Effect Launch Alerts

Free · In‑App Purchases

Rocket Watch tracks upcoming rocket launches — with live countdowns, real weather conditions, and a feature you won't find anywhere else: jellyfish-plume potential. WHAT'S A JELLYFISH PLUME? During dawn and dusk launches, a rocket's exhaust can climb high enough to catch direct sunlight while the ground below is still dark — creating a luminous, jellyfish-shaped glow across the sky. 321 Jelly calculates whether each upcoming launch falls in that window, so you know when to look up for something special. FEATURES • Live countdowns for every upcoming launch, inside 72 hours • Jellyfish-plume potential for each launch, based on real sunrise/sunset/twilight data • Current sky conditions (clear, cloudy, or rain) for each launch's own time • A home screen widget showing the next launch at a glance • Local notifications at T-10 minutes, T-60 seconds and liftoff — plus a T+4 minute alert on jellyfish launches. With your permission, your approximate location (which stays on your device) limits alerts to launches close enough to actually see • Rocket photos and live broadcast links when available • Share any launch with one tap • No account required, no ads, no data collection Rocket Watch is free to use. If it helps you catch a launch, an optional paid version unlocks Live Activities, Notifications, and Widgets. Your support helps keep the app supported with new features. Jellyfish-plume potential is a modeled estimate based on public twilight data, not an official forecast. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

  • 5.0
    out of 5
    3 Ratings

• Widgets now count down live to the second, like 8d 11h 35m 23s, right on your home screen or desktop. • Widgets show the sonic boom call (Single Boom, Double Boom or No Boom) beside the rocket. • New alert: Prepare for Incoming Sonic Boom arrives about 30 seconds before a returning booster's boom. Turn it off anytime in Settings under Sonic Boom Alerts. • Fixes and polish.

The developer, Joshua Justice, 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 Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    Joshua Justice
    Size
    8.1 MB
    Category
    Education
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    • Rocket Watch Crew (Family) $99.99
    • Monthly $0.99
    • Rocket Watch Crew (Individual) $49.99
    Copyright
    © 2026 Joshua Justice