GPS Satellite Sky Map
Coordinates · Accuracy · Sky
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
The Lock Screen card now says when it is paused instead of quietly showing an old fix, and the ad no longer interrupts the moment your position locks on.
See where you are, how good the fix is, and which GPS satellites are overhead — with a sky map computed from real orbit data.
SATELLITE SKY MAP
A polar chart places the GPS constellation above you, computed from the public GPS almanac (US Coast Guard / CelesTrak) propagated with the standard orbit equations for your position and the current time. It is refreshed weekly and works offline from a bundled copy.
These are PREDICTED positions, and the app labels them as such on screen. iOS gives apps no per-satellite data at all — no live signal strengths, no which-satellite-is-in-use, and no GLONASS or Galileo. What you see is where the GPS satellites actually are, not what your receiver is hearing from them.
POSITION AND FIX QUALITY
• Latitude and longitude, in your choice of format
• Accuracy in metres with a plain quality rating
• Altitude, ground speed and course
• A gauge that tells you at a glance whether the fix is worth trusting
WAYPOINTS
Save a spot, navigate back to it with distance and bearing, and get an arrival alert. Export the lot as CSV or GPX.
LOCK SCREEN CARD
While the app is open, a Live Activity shows accuracy, altitude and speed on the Lock Screen and in the Dynamic Island. It cannot keep updating once the phone is locked — this app does not run location in the background — so it marks itself PAUSED rather than leaving a stale reading looking current.
WHO USES IT
Hikers and paddlers checking fix quality before relying on it · paragliding and drone pilots · surveyors wanting a quick accuracy read · anyone curious what is overhead right now
Available in 25 languages.
Ratings & Reviews
The Lock Screen card no longer lies to you.
It could only ever update while the app was open, because this app does not track your location in the background. So the moment you locked the phone — the moment the card actually became visible — it froze on the last reading and sat there looking current, sometimes for hours. It now marks itself PAUSED, with the time of the last fix, so a stale number is never mistaken for a live one. Reopen the app and it resumes.
Also in this update:
• The full-screen ad that appeared the instant your position locked on is gone. Acquiring a fix is not something you asked for, and an ad landing on that moment read as an ad for opening the app. It now appears when you copy your coordinates — a result you actually wanted.
• The description no longer says the app tracks GLONASS and Galileo satellites in real time. On iPhone it cannot: iOS gives apps no per-satellite data at all — no live signal strengths, no which-satellite-is-in-use, and nothing outside GPS. The sky map shows where the GPS constellation genuinely is, computed from the public almanac for your position and time, and is labelled as a prediction. That part was always honest on screen; now the store page matches it.
The developer, Kyu-Hee Jang, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kyu-Hee Jang
- Size
- 64.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Contains
Advertising
- Copyright
- Copyright © 2026 Simon Jang. All rights reserved.