ISS Tracker vs cwTime Practice
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
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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.
cwTime Practice
This utility app simulates an Iambic Keyer for Morse code practice. Users can tap paddles to send dits and dahs, access a Morse code dictionary, and adjust keyer settings like speed and tone frequency.
- Iambic Keyer simulation
- Morse code dictionary
- Adjustable WPM speed
- Adjustable tone frequency
- Clear log function
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This is a Iambic Keyer. Press the left paddle (blue) for dit and the right paddle (green). Press the red trash icon to clear the log, the blue book icon for the morse code dictionary (letters and abbreviations), and the gray gear icon to change key settings including the speed of the keyer in WPM and the frequency of the tone.
Screenshots
Verdict
The clearest difference is rating: ISS Tracker at 4.7 against cwTime Practice's 4.0. ISS Tracker also leads on update cadence (weekly vs every 3 months) and ratings volume (19 vs 1). cwTime Practice's advantage is iOS requirement (18.6 vs 26.0). On price, review sentiment, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
ISS Tracker holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: ISS Tracker has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
ISS Tracker ships an update weekly, cwTime Practice every 3 months. Both last shipped on October 30, 2026.
| Parameter | ISS Tracker | cwTime Practice |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (19 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 19 — better | 1 |
| Update frequency | Weekly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 18.6 — better |
| Further details — not scored | ||
| Size | 15 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Lucent Enterprises Ltd. | Jett Mu |
Customer experience
ISS Tracker
cwTime Practice
In-app purchases
ISS Tracker
No in-app purchases
cwTime Practice
No in-app purchases
Questions
Is ISS Tracker free?
Is cwTime Practice free?
Which has better reviews, ISS Tracker or cwTime Practice?
Do ISS Tracker or cwTime Practice have ads?
Which is updated more often, ISS Tracker or cwTime Practice?
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