Comparison

Copernicus Sentinel vs Satellite Tracker / Radar

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Copernicus Sentinel

Explore and track Earth observation satellites in real-time. Discover satellite details, view 3D models, and receive notifications for overhead passes. Stay updated on the latest news and products from this space observation program.

Highlights
  • Real-time satellite tracking
  • Detailed 3D satellite models
  • Overhead pass notifications
  • Latest news and product updates
  • Historical data transmission visualization
  • Interactive 3D globe exploration
Features
Read full description

The Sentinel App is a gateway to knowing the Copernicus Sentinel satellites. It lets users track the satellites in real-time, discover their key elements, read the latest news and learn more about their products. Users can, among other things, explore detailed 3D models of the satellites, see the last and next time they have been and will be over the user's location, move the satellites to the time of the last data transmission and smoothly move them back to their current location over the 3D globe. Notifications can also be set to be warned when the satellites are flying by. ESA is developing a series of next-generation Earth observation missions, on behalf of the joint ESA/European Commission initiative Copernicus (previously GMES - Global Monitoring for Environment and Security). The goal of the program is to replace current and older Earth observation missions, such as ERS and Envisat, which have reached or are close to reaching the end of their operational life span. This will ensure a continuity of data so that there are no gaps in ongoing studies. Each mission will focus on a different aspect of Earth observation, such as Atmospheric, Oceanic or Land monitoring, and the data will be of use in many applications.

About

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.

Highlights
  • 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
Features
Read full description

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

Copernicus Sentinel4 screens
Satellite Tracker / Radar4 screens

Verdict

The call

Copernicus Sentinel and Satellite Tracker / Radar both sit at 4.4 stars, but that hides the real split: 50% of Satellite Tracker / Radar's written reviews are positive against 14% of Copernicus Sentinel's. Satellite Tracker / Radar also leads on update cadence (weekly vs every 2 months). Copernicus Sentinel's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, rating, ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Copernicus Sentinel against 4.4 for Satellite Tracker / Radar. Both are backed by a comparable volume of ratings — 19 and 30 respectively. Written reviews are what separate them: 14% of Copernicus Sentinel's written reviews are positive against 50% of Satellite Tracker / Radar's.

UpkeepUpdate frequency

Copernicus Sentinel ships an update every 2 months, Satellite Tracker / Radar weekly. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard4 real differences · 6 level
Copernicus Sentinel versus Satellite Tracker / Radar: the parameters behind the verdict, then further details
ParameterCopernicus SentinelSatellite Tracker / Radar
PriceFreeFree
Rating4.4 (19 ratings)4.4 (30 ratings) — better
Positive reviews14.3% of reviews50.0% of reviews — better
Number of ratings1930 — better
Update frequencyEvery 2 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.6
Further details — not scored
Size56 MB66 MB
Age rating4+4+
DeveloperESA - European Space AgencyMICHAL DOMINIK GIZA

Customer experience

Copernicus Sentinel

All ratings18 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews14 reviews
Positive14.3%
Neutral7.1%
Negative78.6%

Satellite Tracker / Radar

All ratings30 ratings
Positive83.3%
Neutral3.3%
Negative13.3%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Copernicus Sentinel

No in-app purchases

None

Satellite Tracker / Radar

No in-app purchases

Questions

Is Copernicus Sentinel free?
Copernicus Sentinel is free to download, with no in-app purchases.
Is Satellite Tracker / Radar free?
Satellite Tracker / Radar is free to download, with no in-app purchases.
Which has better reviews, Copernicus Sentinel or Satellite Tracker / Radar?
Satellite Tracker / Radar is rated higher. Copernicus Sentinel averages 4.4 out of 5 from 19 ratings, while Satellite Tracker / Radar averages 4.4 from 30 ratings.
Do Copernicus Sentinel or Satellite Tracker / Radar have ads?
Satellite Tracker / Radar shows ads; Copernicus Sentinel does not.
Which is updated more often, Copernicus Sentinel or Satellite Tracker / Radar?
Copernicus Sentinel ships an update every 2 months, and Satellite Tracker / Radar weekly. Most recently, Copernicus Sentinel was updated on October 24, 2026 and Satellite Tracker / Radar on October 16, 2026.

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