Track and predict flyovers of the International Space Station, Tiangong (Chinese Space Station), and Hubble Space Telescope in stunning, real-time 3D. Immerse yourself in a photorealistic globe of Earth, showcasing orbital paths and live positions for the three largest objects in low Earth orbit—optimized for iPhone, Apple Watch, and Macs with Apple silicon.
Plan up to 30 days ahead with precise, location-based pass predictions, complete with a custom 0–4 star rating system that highlights the most visible flyovers. Tap to add passes to your calendar and never miss a moment.
Key Features:
• Real-Time Tracking: Follow the ISS, Tiangong, and Hubble with interactive 3D visuals and high-frame-rate animations.
• Flyover Ratings: Instantly spot the best viewing opportunities with our intuitive star rating system.
• 3D SkyDome View: See the arc of each pass from your location with a rotatable sky overlay.
• Dynamic Earth Globe: View live positions, orbits, the Earth’s axis, solar reflections, subsolar point, and day/night transitions.
• Crew Info: Meet the current crew, read bios, view mission stats, and connect via X (Twitter).
• Alerts & Scheduling: Get automatic reminders 1 hour and 15 minutes before passes—just tap to schedule.
• Live HD Earth Video: Stream from the ISS’s Harmony node in real time.
• Map Customization: Choose from multiple map marker styles and zoom options.
• Ambient Music: Enhance your stargazing experience with optional background music.
• Info Overlay: View current satellite position, altitude, and speed at a glance.
• Companion Apple Watch App: Includes Lock Screen and Home Screen widgets for quick access.
• All Settings Saved: Preferences like zoom level and map style are saved for your convenience.
I created this app to bring the awe of space exploration right to your fingertips. Join me on this journey—and never miss a pass again.
Having used various other ISS trackers over the years, that have since been left behind due to the lack of development, it’s been great seeing the attention that’s gone into this one.Clean, easy to use UI, which doesn’t take long to navigate your way through all of the different options. I love the fact there’s a complimentary Apple Watch App too, which makes looking out for passes really easy!Good work, thank you!
Developer Response
Thank you so much!
Pass prediction problems
Wirralman55
I’ve recently installed this app and review it after thinking it was showing incorrect pass predictions where I’m getting two predictions for the same date appropriately 1 to 1.5 hours apart. After a chat with my son and a personal response from the app developer I now realise that this is PERFECTLY NORMAL ...ITS TRAVELLING VERY FAST 😀 and there will be passes that won’t be ‘visible’ due to the position of the sun from your location.
Developer Response
Thank you for the great review and feedback!
Very Disappointed with this app
R....J......T
I am wondering why there was a £2.99 charge for this app as I can source all the info already for free. I expected something far more absorbing, dynamic and compelling but feel completely underwhelmed by what this app has to offer. It all seems very flat and lifeless.....
Keeping watch
Chris39a
Absolutely a brilliant app. We’re having a run of about 10 days with the ISS overhead. This app gives you good details of what time and what direction it will be travelling. 10/10
Developer Response
Thank you so much!
■ Improvements
∙ Improved tab bar buttons.
▲ Bug Fixes
∙ Fixed issue with tab bar on iOS/iPadOS 26+ not formatting correctly.
Version 7.22.1
The developer, Michael Stebel, 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 based, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Provider
Michael Stebel
Size
270.9 MB
Category
Reference
Compatibility
Requires iOS 18.0 or later.
iPhone Requires iOS 18.0 or later.
iPad Requires iPadOS 18.0 or later.
Mac Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
