Zenith vs Satellite Tracker / Radar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zenith
Explore Earth in a 3D simulation and track the International Space Station's real-time orbit. Experience a rotating planet with dynamic soundscapes and see the current number of astronauts on board.
- 3D Earth simulation
- Real-time ISS orbit tracking
- Live astronaut count
- Dynamic soundscapes
- Earth rotation view
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Zenith shows the International Space Station live on a 3D globe, and tells you when to see it with your own eyes. • Live position, altitude, speed, day or night — updated every 5 seconds • The camera follows the station; spin the Earth with a finger • Upcoming visible passes over you: time, direction, height • A free alert before the best pass of the week • The crew on board: photos, agencies, days in orbit • Ambient space soundscape ZENITH+ • An alert before every visible pass • Full 10-day forecast • Choose your alert time: 2, 5, 10 or 15 minutes • Predicted orbit on the globe Zenith+ is available as a monthly or yearly subscription (7-day free trial on yearly), or as a one-time lifetime purchase. Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period; manage them in Settings › Apple ID › Subscriptions. Your location stays on your iPhone. No ads. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Satellite Tracker / Radar
Explore the night sky with this AR-powered guide. Identify satellites like the ISS and Starlink, constellations, and stars by pointing your phone at the sky. Get real-time tracking, pass predictions, and notifications for visible celestial events.
- AR Sky Guide
- Satellite tracking (ISS, Starlink)
- Constellation and star identification
- Live sky radar and 3D globe
- Pass predictions and notifications
- Offline mode
- Large satellite database
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Turn your phone into the ultimate AR Sky Guide. Identify lights in the night sky instantly. Whether tracking the International Space Station (ISS), watching a Starlink train, or identifying Constellations, Satellite Tracker provides professional-grade data with a stunning interface. NEW: AR STARGAZING MODE Stop guessing where to look. We've expanded our Augmented Reality view to include the stars! Identify Stars & Constellations: Align your phone to see constellation lines and star names drawn over the real sky. Satellite AR: Spot the ISS, Hubble, and thousands of satellites with precise zenith alignment. Unified View: See how satellites move through the constellations in real-time. NEW: AUGMENTED REALITY (AR) MODE Stop guessing where to look. Activate the AR Sky View and point your camera at the sky. The app overlays the exact position of satellites, the ISS, and celestial objects directly on your screen. Align the zenith arrow and spot objects in seconds. CORE FEATURES: Live Sky Radar & 3D Globe Visualize Earth and its orbiters like never before. Switch between a 2D Radar Scope for polar plotting or a stunning 3D Interactive Globe to see satellite trajectories relative to the Earth's day/night line. ISS & Starlink Tracker Get precise Pass Predictions. We calculate flyovers specifically for your location using the latest SGP4 propagation data. ISS Spotter: Know exactly when the Space Station will rise and set. Starlink Trains: Track the famous "string of pearls" satellite constellations. Notify Me: Set alerts for the next 2 hours or next 6 hours so you never miss a visible pass. Massive Database (NORAD/TLE) Access a catalog of over 12,000+ objects. From active weather satellites to space junk and classified bodies. Search: Find objects by Common Name or NORAD ID. Classify: Color-coded filters for LEO, MEO, GEO, and HEO orbits. Live Telemetry: View real-time altitude, velocity, range, and doppler shift. Power User Tools Offline Mode: Heading to a dark-sky preserve? Predictions work without internet access. Device Optimization: Adjustable "Satellite Limit" to ensure smooth performance on any device. Download Satellite Tracker today and join the community of sky-watchers. Never ask "What was that light?" again.
Screenshots
Verdict
The clearest difference is ads: Zenith at none against Satellite Tracker / Radar's shown. Zenith also leads on rating (4.8 vs 4.4) and monetization model (free vs ad-supported). Satellite Tracker / Radar's advantage is update cadence (weekly vs every 13 months) and ratings volume (34 vs 5). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Zenith holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Satellite Tracker / Radar has 34 ratings behind it against 5, so its average is the more settled of the two.
Zenith ships an update every 13 months, Satellite Tracker / Radar weekly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.
| Parameter | Zenith | Satellite Tracker / Radar |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | 4.4 (34 ratings) |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | 5 | 34 — better |
| Update frequency | Every 13 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 7 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | Aurelien Grifasi | MICHAL DOMINIK GIZA |
In-app purchases
Zenith
No in-app purchases
Satellite Tracker / Radar
No in-app purchases








