Altimeter X. vs ISS Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Altimeter X.
Read full descriptionHide full description
Elevate your altitude tracking experience with our GPS-based Altimeter app! Designed for simplicity and precision, this app helps you measure your current altitude with just a tap. Simply press the center image—a mountain with a sea backdrop—and watch the altitude update in real-time with a smooth animation and a progressive loading bar around the image. - Accurate Altitude Measurement: Uses GPS to provide precise readings of your current altitude. - Interactive Updates: Tap the center image to refresh your location and see your altitude animate to life with a circular progress bar. - Unit Switching: Easily toggle between feet and meters to suit your preference. - Customizable Display: Choose between light and dark mode for a personalized viewing experience. - Multi-Language Support: Available in over 20 languages, making it accessible to users around the world. Whether you’re hiking, exploring or just curious about your elevation, our Altimeter app is a simple, reliable tool to have in your pocket. Download now and stay informed about your altitude wherever you go!
ISS Tracker
Monitor the International Space Station's live position and vital telemetry data in real-time. Track its orbit, altitude, velocity, and internal environmental systems. Ideal for space enthusiasts and students interested in space exploration.
- Real-time ISS position tracking
- Interactive world map
- Altitude and velocity data
- Comprehensive telemetry monitoring
- Environmental and power system data
- Dark mode support
Read full descriptionHide full description
Find out when the International Space Station flies over you and exactly where to look. On a good night it’s brighter than any star. YOUR NEXT PASS, IN PLAIN WORDS “Tonight at 8:05 PM. Look west, low.” Each pass also says how long it’s visible and how bright it is, and has a round sky chart that shows its path, from where it appears to where it fades. See 14 days of passes, and the cloud forecast for the next ones. ALERTS FOR GOOD PASSES Get a heads-up a few hours before a good pass, and an alert 5 minutes before it starts. A good pass climbs at least 30° above the horizon, or is bright and long. If two weeks have none, you get alerts for the best low passes instead. You can turn on alerts for every visible pass in the app’s settings. A Live Activity counts down on your Lock Screen and in the Dynamic Island. FIND IT IN THE SKY Hold your phone up and follow the pointer to the station. Saw a bright, moving light? Ask “Was that the ISS?” and get a straight answer. No telescope needed. WHERE IS THE ISS RIGHT NOW? See it on a 3D globe, with the day and night sides of Earth, or on a live map with the ground track of its orbit. You can add Tiangong, China’s space station, and get its passes too. WHO’S UP THERE See the crew on board, and the next launches, dockings and spacewalks. ALWAYS ONE GLANCE AWAY Widgets show your next pass on the Home Screen and Lock Screen. A Control Center button opens the sky pointer. PRIVATE AND SIMPLE No account needed. Every pass is worked out on your phone, and your exact location is never sent to us. Apple Weather and Apple Maps use it for the cloud forecast and the place name. For iPhone and iPad.
Screenshots
Verdict
The clearest difference is in-app purchases: ISS Tracker at none against Altimeter X.'s 1. Altimeter X.'s advantage is iOS requirement (13.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Altimeter X. sells 1 one-off in-app purchase. ISS Tracker asks for nothing beyond the download.
Altimeter X. ships an update every 5 days, ISS Tracker weekly. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.
| Parameter | Altimeter X. | ISS Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (19 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 19 — better |
| Update frequency | Every 5 days — better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 49 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Hubert Willy Lehmann | Lucent Enterprises Ltd. |
In-app purchases
Altimeter X.
- Remove Ads$1.99
ISS Tracker
No in-app purchases
Questions
Is Altimeter X. free?
Is ISS Tracker free?
Do Altimeter X. or ISS Tracker have ads?
Which is updated more often, Altimeter X. or ISS Tracker?
Other comparisons















