ISS Detector vs sunClock World Map
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ISS Detector
Easily track the International Space Station and other satellites. Receive timely alarms before passes and get weather condition checks for optimal viewing. Enhance functionality with optional in-app purchases to discover more celestial objects.
- ISS tracking and alerts
- Weather condition checks
- Alarm notifications
- Track Starlink trains
- Track Hubble telescope
- Track amateur radio satellites
Read full descriptionHide full description
Have you seen the International Space Station? It is visible with the naked eye! This is the easiest way to spot the station. ISS Detector will tell you when and where to look for the ISS. You get an alarm a few minutes before a pass. You will never miss it. ISS Detector will also check if the weather conditions are right. A clear sky is perfect for spotting. Premium will enhance the functionality of ISS Detector. With the subscription you can add many famous satellites and amateur radio satellites. See the Starlink satellite trains, Hubble space telescope, rocket bodies, Vanguard 1 and many bright satellites. Available categories in Premium: Radio Amateur Satellites: Track dozens of ham and weather satellites. Starlink: Track Starlink satellite trains. Famous Objects: Hubble Space Telescope, rocket bodies, bright satellites and more. Comets: Find comets in the night sky. You might need binoculars or a telescope to see them Planets: Find all the planets Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
sunClock World Map
Visualize global night and day cycles on an equirectangular world map. Get sunrise, sunset, and weather data for any location. Tap the map to view specific place details.
- World map with night shade visualization
- Sunrise and sunset times
- Location-specific weather data
- Tap to view individual location data
- GPS location access for data
Read full descriptionHide full description
sunClock App: to see night shade on an equirectangular-projection of a world map. Additionally the app provides location data as sunrise and sunset as well as weather data. Therefore the app needs a location GPS access. The location data will not be used for any other purpose. With a tap on the map it is possible to display single location data of other places. It is possible to remove the Google advertisement by purchasing this app. Just click purchase in the Settings page.
Screenshots
Verdict
The clearest difference is review sentiment: ISS Detector at 55% against sunClock World Map's 0%. ISS Detector also leads on rating (4.6 vs 2.2) and update cadence (monthly vs every 10 months). sunClock World Map's advantage is ads (none vs shown). On price, in-app purchases, monetization model 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. ISS Detector sells 7 in-app purchases, starting at $0.99 per month and sunClock World Map sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
ISS Detector holds the better App Store score, 4.6 against 2.2. That said, the two scores are not equally well evidenced: ISS Detector has 740 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 55% of ISS Detector's written reviews are positive against 0% of sunClock World Map's.
ISS Detector ships an update monthly, sunClock World Map every 10 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | ISS Detector | sunClock World Map |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (740 ratings) — better | 2.2 (5 ratings) |
| Positive reviews | 55.4% of reviews — better | 0.0% of reviews |
| Number of ratings | 740 — better | 5 |
| Update frequency | Monthly — better | Every 10 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 35 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Derk Vrijdag | Stefan von Weihe |
Customer experience
ISS Detector
sunClock World Map
In-app purchases
ISS Detector
- Premium Access2 variants$0.991 Month
- Donation$1.991 Month
- Premium Access$1.991 Month
Show 4 moreShow fewer
- Premium Access7 Days trial$2.991 Year
- Premium Access7 Days trial$5.991 Year
- Donation2 variants$5.991 Year
- Premium Access7 Days trial$11.991 Year
sunClock World Map
- sunClock world map$0.99
Questions
Is ISS Detector free?
Is sunClock World Map free?
Which has better reviews, ISS Detector or sunClock World Map?
Do ISS Detector or sunClock World Map have ads?
Which is updated more often, ISS Detector or sunClock World Map?
Other comparisons















