ISS Detector has been a favorite among satellite watchers for years. It is reliable, easy to use, and great at what it does: telling you when the International Space Station is passing over your location. For a long time, it was the default recommendation for anyone who wanted to start spotting satellites.
But the satellite tracking landscape has changed. Maybe you are switching from Android to iOS, where ISS Detector is not available. Maybe you want to track more than just the ISS and a handful of other objects. Maybe you are looking for features like augmented reality guidance, launch tracking, or a modern interface that does not feel like it was designed in 2014. Whatever your reason, there are excellent ISS Detector alternatives in 2026 that are worth exploring.
We tested seven of the best options across iOS, Android, and web to help you find the right fit. Here is how they compare.
Why People Look for ISS Detector Alternatives
Before we get into the apps themselves, it helps to understand what drives people to look for an ISS Detector replacement. The reasons tend to fall into a few clear categories.
The biggest one is platform availability. ISS Detector is Android-only. There is no iOS version, which means anyone with an iPhone or iPad is simply out of luck. If you have recently switched from Android to iOS, or you are an iPhone user who has heard good things about ISS Detector and wants something comparable, you need an alternative.
The second major factor is satellite catalog size. ISS Detector focuses primarily on the ISS, with extensions for a handful of additional objects like the Hubble Space Telescope, amateur radio satellites, and Iridium flares (which no longer happen since the original Iridium constellation was deorbited). If you want to track Starlink trains, China's Tiangong station, rocket bodies, or any of the thousands of other visible satellites, ISS Detector's catalog feels limited.
Then there is the interface. ISS Detector works well, but its design has not evolved significantly over the years. Users who are accustomed to modern app design may find the experience dated. Features like AR tracking, interactive 3D globe views, and live launch coverage are available in newer alternatives but absent from ISS Detector.
Finally, the extensions model can feel fragmented. Some features that feel like they should be core functionality, like tracking additional satellites beyond the ISS, require separate paid add-ons. Newer apps tend to include broader functionality in a single package.
ISS Detector remains an excellent app for Android users who mainly want to track the ISS. But if you need more satellites, an iOS app, or modern features like AR, these alternatives are worth exploring.
Quick Comparison Table
Here is a side-by-side look at all seven ISS Detector alternatives before we dive into the details. This should help you narrow down the list quickly based on what matters most to you.
| App | Platform | AR | Satellites | Launches | ISS Detector Advantage |
|---|---|---|---|---|---|
| Skytrail | iOS | Yes | 2,000+ | Yes | More satellites, AR, launches |
| Orbitrack | iOS / Mac | Yes | 200+ | No | iOS native, AR, better UI |
| Heavens-Above | Web / Android | No | 1,000+ | No | More satellites, free |
| Star Walk Satellite | iOS / Android | Yes | 20+ | No | AR view, cross-platform |
| GoSatWatch | iOS | Yes | 500+ | No | More satellites, iOS, AR |
| Stellarium Mobile | iOS / Android | Yes | Limited | No | General astronomy, AR |
| N2YO | Web | No | 20,000+ | No | Huge catalog, free |
1. Skytrail - Best Overall Alternative
Skytrail is the newest entry on this list, and it is designed from the ground up to be everything a modern satellite spotter could want. Where ISS Detector focuses narrowly on the ISS and a few extras, Skytrail tracks over 2,000 satellites out of the box, including the ISS, Tiangong, Hubble, Starlink trains, rocket bodies, and hundreds of other objects visible to the naked eye.
The standout feature is real-time AR tracking. Point your phone at the sky during a pass and Skytrail overlays a crosshair on your live camera view, guiding you directly to the satellite. No more squinting at a flat sky chart and trying to figure out where "25 degrees above the southwest horizon" actually is. The AR view shows you exactly where to look, in real time, as the satellite moves.
Skytrail also does something none of the other satellite trackers on this list do: launch tracking. You get a full schedule of upcoming rocket launches worldwide, with live countdowns, mission details, and links to livestreams. It bridges the gap between satellite tracking and space launch enthusiasm in a way that feels natural.
On top of that, Skytrail includes 21 achievements to earn as you log sightings, a full sighting history and statistics dashboard, fleet management where you can follow your favorite satellites and give them nicknames, push notifications before passes, and Live Activities on your lock screen during active passes. The interface uses an iOS 26 liquid glass design that looks genuinely modern.
- 2,000+ satellites with accurate pass predictions
- Real-time AR tracking with crosshair guidance
- Launch tracking with countdowns and livestreams
- 21 achievements and full sighting log
- Modern liquid glass UI, push notifications, Live Activities
Note: Currently in pre-launch. iOS only.
Skytrail is currently in pre-launch. Join the waitlist to get early access when it launches in 2026.
2. Orbitrack - Best for Apple Users
If you are deep in the Apple ecosystem and want something elegant, Orbitrack is hard to beat. It is a beautifully designed native app for iOS and Mac that makes satellite tracking feel polished and intuitive. The 3D globe view is particularly impressive, showing you satellite orbits rendered in real time with smooth animations and thoughtful details.
Orbitrack includes an AR mode that lets you point your phone at the sky to identify satellites and see their orbital paths overlaid on the real sky. The interface is clean and modern, with the kind of design quality you expect from a premium Apple app. It also supports pass notifications so you do not miss upcoming opportunities.
The catalog is more curated than expansive, with around 200 satellites available. That covers all the major objects, including the ISS, Hubble, Tiangong, and popular amateur radio satellites, but you will not find the depth of something like Skytrail or N2YO. There is also no launch tracking, so if that matters to you, look elsewhere.
Orbitrack is a one-time purchase with no subscriptions, no in-app purchases, and no ads.
- Beautiful native iOS and Mac design
- 3D globe with real-time orbit visualization
- Clean AR mode for sky identification
- One-time purchase with no ongoing costs
Note: Smaller satellite catalog (~200), no launch tracking or gamification features.
3. Heavens-Above - Best Free Option
Heavens-Above is the veteran of satellite tracking. It has been providing accurate pass predictions since the late 1990s, and it remains one of the most trusted sources of satellite visibility data in the world. If data accuracy is your top priority, Heavens-Above is the gold standard.
The service offers a huge database of over 1,000 trackable satellites with detailed pass predictions, sky charts showing the exact trajectory a satellite will follow across the sky, brightness estimates, and ground track maps. The data is sourced directly from official TLE (Two-Line Element) sets and the predictions are consistently excellent.
There is an Android app and a full-featured web interface. Both are completely free with no ads, no premium tier, and no paywalls. You get access to some of the most reliable satellite prediction data available anywhere.
The downside is the interface. Heavens-Above looks and feels like a website from the early 2000s, because it is. There is no AR mode, no 3D visualizations, no push notifications, and a fairly steep learning curve for new users. The data is outstanding, but the presentation requires patience. For a detailed breakdown, see our Heavens-Above vs Skytrail comparison.
- Extremely accurate pass predictions
- Large satellite database (1,000+)
- Detailed sky charts and brightness data
- Completely free, no ads
Note: Dated interface, no AR, no iOS app, steep learning curve for beginners.
The Modern ISS Detector Alternative
Skytrail tracks 2,000+ satellites with AR guidance, launch coverage, and 21 achievements to earn. Everything ISS Detector does and more.
Launching 2026. No spam.
4. Satellite Tracker by Star Walk
Star Walk's Satellite Tracker is the most casual-friendly option on this list. If you just want to occasionally check when the ISS is flying over and point your phone at the sky to find it, this app does the job with minimal friction. It is simple, visual, and available on both iOS and Android, making it the most accessible cross-platform option.
The AR mode is nicely done. You point your phone at the sky and the app overlays satellite positions on your camera view, making it easy to identify what you are looking at. The interface is clean and colorful, with a focus on visual appeal over data density.
The limitation is the satellite catalog. Star Walk Satellite Tracker covers roughly 20 popular satellites, including the ISS, Hubble, and Tiangong, but that is about it. If you want to track Starlink, amateur radio satellites, or anything beyond the biggest names, you will need a different app. There are also no pass notifications in the free version and no launch tracking.
The free version is ad-supported. A pro upgrade removes ads and adds a few extra features, but does not significantly expand the satellite catalog.
- Easy to use, minimal learning curve
- Good AR view for casual use
- Cross-platform (iOS and Android)
- Free tier available
Note: Very limited satellite selection (~20), ads in free version, no launch tracking.
5. GoSatWatch
GoSatWatch is a well-established iOS satellite tracker that has been around for over a decade. It occupies a solid middle ground between the simplicity of Star Walk and the depth of something like Skytrail or Heavens-Above. If you want a reliable, one-time-purchase app with a decent catalog, GoSatWatch delivers.
The app tracks over 500 satellites, which is significantly more than ISS Detector. You can customize your tracking list, set up notifications for upcoming passes, and use an AR compass view that helps you find satellites in the sky. The pass predictions are accurate and include elevation, direction, and brightness data.
GoSatWatch is a workhorse. It does what it promises, the data is reliable, and as a one-time purchase there are no ongoing costs.
The downside is the interface, which has not kept pace with modern iOS design trends. It is functional rather than beautiful, and there are no achievements, no launch tracking, and no sighting log. But it does what it promises, and it does it well.
- Large satellite catalog (500+)
- Accurate pass predictions with notifications
- AR compass view for sky identification
- One-time purchase with no ongoing costs
Note: Dated interface, no launch tracking, no gamification or sighting log.
6. Stellarium Mobile
Stellarium is not really a satellite tracker. It is a planetarium app that happens to include satellite tracking as one of many features. If you are interested in astronomy broadly, not just satellites, Stellarium is one of the most impressive apps available on any platform.
The star map is genuinely beautiful. Point your phone at the sky and Stellarium overlays constellations, planets, deep-sky objects, and yes, some satellites, on your live camera view. The AR experience is among the best of any astronomy app. It is the kind of app that makes you want to go outside on a clear night just to explore the sky.
The satellite tracking component is secondary, though. Stellarium includes a limited number of satellites, and the pass prediction capabilities are basic compared to dedicated satellite trackers. There are no pass notifications, no detailed predictions with brightness and elevation data, and no way to build a custom list of tracked objects the way you can in Skytrail or GoSatWatch.
The free version covers the basics. Stellarium Plus adds advanced features like telescope control, extended deep-sky catalogs, and high-resolution imagery. The satellite features are the same in both versions.
- Gorgeous star map and AR sky view
- Broad astronomy features beyond satellites
- Cross-platform (iOS and Android)
- Free tier with solid functionality
Note: Satellite tracking is secondary, no pass notifications, limited satellite catalog.
7. N2YO
N2YO is the opposite end of the spectrum from Star Walk. Where Star Walk is casual and visual, N2YO is data-heavy and utilitarian. It is a web-based satellite tracker with the largest catalog on this list by far, tracking over 20,000 objects including active satellites, rocket bodies, and debris.
The real-time map view shows satellite positions on a world map, and you can click on any object to get 10-day pass predictions for your location. The data is detailed, including rise and set times, maximum elevation, and pass duration. For anyone who wants to track obscure objects or explore the full catalog of items in orbit, N2YO is unmatched.
The service is completely free and requires no installation since it runs entirely in your web browser. That makes it accessible from any device with an internet connection, including desktops and laptops that other apps on this list do not support.
The downside is everything else. The interface is functional but dated, with the look and feel of a web 1.0 utility site. There is no AR, no push notifications, no mobile app, and no way to log sightings or earn achievements. N2YO is a reference tool, not an experience. But for pure data and catalog breadth, nothing else comes close.
- Massive catalog of 20,000+ tracked objects
- 10-day pass predictions for any location
- Completely free, no installation required
- Accessible from any device with a browser
Note: Web-only, no AR, no mobile app, utilitarian interface.
Which ISS Detector Alternative Should You Choose?
With seven solid options to pick from, the right choice depends entirely on what you are looking for. Here is a quick decision guide based on common scenarios.
Switching from Android to iOS? Your best bets are Skytrail or Orbitrack. Skytrail offers the broadest feature set with over 2,000 satellites, AR, and launch tracking. Orbitrack is a beautiful native app with a polished design and a strong feature set.
Want something free? Go with Heavens-Above for the most accurate predictions and a deep satellite catalog, or N2YO if you want access to the largest database of tracked objects available anywhere. Both are completely free with no ads or paywalls.
Casual user who just wants to occasionally spot the ISS? Satellite Tracker by Star Walk is the simplest option. It works on both iOS and Android, has a nice AR view, and requires almost no learning curve to get started.
Serious satellite spotter? Skytrail gives you the most features in one package: massive catalog, AR guidance, launch tracking, achievements, and sighting logs. GoSatWatch is another strong option with a solid catalog and reliable predictions as a one-time purchase with no ongoing costs.
General stargazer who also wants satellites? Stellarium Mobile is the answer. It is primarily a planetarium app with a beautiful AR sky view, and satellite tracking is included as a bonus. Great for people who are interested in the full night sky, not just satellites.
The right ISS Detector alternative depends on what you value. But no matter what your priorities are, there is an app on this list that does the job well.
Frequently Asked Questions
Is ISS Detector available on iPhone?
No, ISS Detector is Android-only. There is no iOS version and the developer has not announced plans to create one. The best iOS alternatives are Skytrail, Orbitrack, and GoSatWatch, all of which offer pass predictions, notifications, and AR tracking features that go beyond what ISS Detector provides on Android.
What's the closest app to ISS Detector for iOS?
Skytrail offers the most similar feature set to ISS Detector, with pass predictions and push notifications as core features, plus additional capabilities like AR tracking, launch coverage, fleet management, and 21 achievements to earn. If you are looking for a one-time purchase, Orbitrack and GoSatWatch are both strong choices with reliable pass predictions and AR views.
Is ISS Detector still being updated?
ISS Detector continues to receive updates on Android, but development has slowed compared to its earlier years. The core functionality remains solid for tracking the ISS and a handful of other satellites on Android devices. However, newer alternatives have introduced features like AR tracking, launch coverage, and broader satellite catalogs that ISS Detector has not matched.
Plenty of Great Options
ISS Detector earned its reputation for good reason. It made satellite tracking accessible to millions of Android users and it still works well for its core purpose. But the world of satellite tracking has moved forward, and there are now alternatives that offer more satellites, more features, better design, and cross-platform support.
If you are switching to iOS, expanding beyond the ISS, or just want a more modern experience, you have plenty of excellent options. Try one or two from this list and see which one fits the way you like to observe. The satellites are up there either way. You just need the right tool to find them.