ISS Transit Prediction

Contains ads
127 reviews
Content rating
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About this app

This application generates International Space Station (ISS) Transit Predictions for the Sun, Moon and Planets.

The user specifies a location, which includes latitude, longitude and elevation. The application downloads the latest orbital information. The application generates a transit prediction map which contains prediction paths for each transit within a specified alert radius.

Pro Version Only: Specify and save multiple locations, Save multiple prediction maps for later viewing, add transit to Calendar, View maps with Google Earth, User specified Two Line Elements. No Ads.

Pro Version Only: Available in-app purchase: Unlock Additional Satellites: Compute transits for any satellite, including the Tiangong Space Station and Hubble Space Telescope.

The main screen provides 5 buttons:
•Location - Press this button to add or select the prediction generation location
•Satellite - Press this button to change the transit satellite (Pro Version Only, In-app purchase required)
•Two Line Elements (TLE) - Press this button to download orbital elements
•Generate Prediction - Press this button to start the prediction generation
•View Prediction - Press this button to view the prediction map or text file

The options menu provides the following:
•Locations - Press to add, select, edit or delete saved locations (Pro Version Only)
•Predictions - Press to view, share or delete saved prediction maps (Pro Version Only)
•Settings - Press to set user preferences
•DEM Files - Press to list or delete the downloaded Digital Elevation Model (DEM) Data
•Help - Press to display this help page
•About - Press to display application version, credits and links

Add a named observing location by clicking the "Location" button accessible from the main screen.

The location coordinates can be entered in any of these methods:
•Manually - Enter latitude, longitude and elevation in the text boxes. Positive values represent North and East, negative values South and West. Elevation can be entered in meters or feet above sea level depending on the current prediction units setting.
•Search - Press the search button to search for a location.
•Map Input - Use the map to zoom and pan to a location. Pressing the Set button sets the location name, coordinates and elevation in the text boxes. The elevation of the current coordinates is retrieved using the specified elevation data source setting. Switch between map and satellite modes by toggling the Map/Sat button.
•GPS - By pressing the GPS button, the application uses GPS to obtain location coordinates and elevation.
Use the locations page accessible from the options menu to edit and delete saved locations. (Pro Version Only)

Once a location has been entered and TLE have been downloaded, press the "Generate Prediction" button to begin prediction generation. The progress bar gives an indication of how long it will take to complete the process. Depending on your processor speed, it can take a few minutes to generate the predictions. Pressing the cancel button will cancel the prediction.

Once the prediction generation is complete, the prediction map or text file can be viewed. Pressing the View Prediction button brings up the previously generated prediction map. The text button within the map view displays the prediction text. The Map/Sat button switches between Map mode and Satellite mode.

Within the map view press the Google Earth button to view the map in Google Earth (Pro Version Only). Press the save button to save the prediction for later viewing (Pro Version Only).
Within the transit information window, press the add to calendar button to create a calendar event (Pro Version Only).
Use the predictions page accessible from the options menu to view, share and delete previously saved prediction maps (Pro Version Only).

Location: Only required if GPS option is selected during location entry
Updated on
Nov 19, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

112 reviews
A Google user
January 16, 2019
Looks interesting but tedious setup and ads that get in the way of usage make it almost useless. Uninstalled.
3 people found this review helpful
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Dara Teymourifar
January 30, 2021
Couldn't use the app at all. When I click on "predictions" , the app requires to get upgraded to Pro Version!
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Ed Morana
January 30, 2021
Hi Dara, The prediction menu allows you to view saved predictions, which is a pro feature. The free version allows you to generate and view one prediction at a time, by pressing the generate and view prediction buttons on the main screen. For details see the help menu. Ed
Seth K
December 25, 2021
The app works fine, but they allow ads by scam artists/malware purveyors to pop up fake "upgrade Android" notifications.
2 people found this review helpful
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Ed Morana
December 26, 2021
Hi Seth, developers can not control the ads that Google pops up. Please report these ads to Google using the report ad icon in the corner of the ad.

What's new

Updated CelesTrak URLs