GPS Diagnostic: Satellite Test

GPS Diagnostic: Satellite Test

By David Ryall

  • Category: Navigation
  • Release Date: 2015-09-10
  • Current Version: 3.1
  • Adult Rating: 4+
  • File Size: 180.13 MB
  • Developer: David Ryall
  • Compatibility: Requires iOS 8.0 or later.
Score: 4.5
From 132 Ratings


- Essential tool for your iPhone & iPad. - Test the GPS module. - Resolve GPS problems. - Supplements operation of your navigation apps. - If location cannot be determined then it diagnoses why. - Assists you in changing conditions to get a reliable location. - Geodetic Coordinates (i.e. Latitude & Longitude) and WGS84 Datum included by default. -------------------------------------- COORDINATES PRO (In-App Purchase): Work with multiple charts and maps. Super easy setup of coordinate systems and datums. Credit: "The product was developed using GEOTRANS, a product of the National Geospatial-Intelligence Agency (NGA) and U.S. Army Engineering Research and Development Center." - United States National Grid (USNG) - Military Grid Reference System (MGRS) -Old and New - Ordnance Survey National Grid (OSNG) for Great Britain, - GEOREF - Global Area Reference System (GARS). - 174 Datums (e.g. WGS84, NAD83, NAD27, WGS72, ED50, ED79, OSGB36 etc....) -------------------------------------- - The developer is a professional software and hardware engineer, yachtmaster and pilot with a passion for navigation and Apple products. - Consistent 5 star reviews, see what users are saying: "Perfect Diagnostic Tool - This is the best app if you need to know the actual status of the internal GPS." "Excellent application - This was a much needed application for iOS devices." "Awesome, over used term but this app is - This app does what other developers said they could not do." - Lodestone Chart™ displays all essential GPS satellite information using a chart with only 4 bars. This dramatically simplifies the diagnostic process (Registered Copyright). - Uses the internal GPS of your iPhone or iPad. - Includes a Speedometer, Altimeter and Compass. - Location and altitude ( best-in-class accuracy and reliability ) - Speed (SOG) and Course (COG). - Heading (i.e. Compass) with ability to turn on and off the manual compass calibration. - Hardware information - Accuracy of measurements shown for pro users. - Imperial, metric and nautical units. These are the most commonly used and most useful navigation units. All easily changeable from the screen in use. - Does not require internet access and does not use cellular data. - Essential tool for any power user. (e.g. navigators, yachtsmen, pilots, app developers) - Share your location by text message, email etc. The format contains all essential information for improved accuracy. - Works with Garmin Glo. - GPS Diagnostic™ is a professional GPS test and measurement utility for your iPhone and iPad.



  • Great resource

    By Help1222222
    Great informative app used for diagnosing gps issue in iPhone. My gps stopped working and tried all software settings and restores to fix with no success. The app helped me find it out to be a hardware issue that needed a new “F antenna flex cable” replaced in the phone. 8$ later off amazon and I fixed the issue rather than having to buy a new phone with the help of this diagnostic. The creator was very informative and responsive to emails. Thanks man!
  • Missing Data

    By GeorgeReview
    It does not include the types/makes of the satellites you are connected to. This is important because it has to do with accuracy Recently the FCC allowed U.S. customers to access the EU's Galileo satellites which are more accurate than the US's. I want to know if I'm seeing / connecting to them.
  • Mediocre

    By cmaylo
    For a paid app it could show a lot more detail gleaned from GPS data. There's a similar app on Android that does all this for free and it looks much better too, with toggles for dark sky friendly deep red theme. If you need to see if your GPS actually works, I suppose this is it. I'd return it if it I could considering how lacking in features it is compared to similar offerings on other platforms, like GPS Test on Android.
  • Useless junk app

    By dilshadbarwary
    I downloaded this app and was pleased at last I found a good app for gps readings as shown in previews of the downloaders therefore I purchased this app not caring about paying any cost of money just to get a good deal but I was shocked that this app didn’t work for only mere one time it didn’t work at all neither indoor nor outdoor,I don’t know what’s the reason beyond this,thanks for the developers maybe it’s a good app but it’s useless with me
  • Plus or minus feet

    By Watag1
    + or - feet could be less than 16 ft.
  • AAA+

    By Phat4040
    Awesome app!
  • Helped identify the problem

    By SanDiego333
    My iPhone 6S Plus was getting erratic distance and pace readings with multiple running apps. This isolated the problem to the iPhone’s GPS. Apple support had me reset the phone and reload firmware and iOS (from iTunes and a PC). That was painful, solved the problem. Great app if you suspect GPS problems.
  • Great tool

    By Unhappy since update
    With this tool you can see whether your GPS is still working or not. Great tool as iPhone 6 has some issues and you need to reset network settings once in a while to solve these
  • Great app for IPhone users

    By boaterbb
    Had a problem with navigation apps on my iPhone intermittently working and this helped diagnose the problem as software related. Saved me buying a new phone. The Apple Genius Bar people were very impressed as well. They said they were going to put it on their phones as well.
  • Very useful tool if maps act weird.

    By kf6dky
    Used this app to determine that my internal gps antenna/software weren’t functioning correctly. When any mapping software was open they often didn’t seem to accurately display my exact location and any movement shown I was inaccurately spinning or wrong streets or direction etc etc. This awesome little app was extremely useful as it displayed whether I was actually connected to gps satellites and I discovered that I wasn’t. After firmly pressing on my phone where the internal antenna was located would reconnect a loose antenna and viola, a refresh of the app displayed correctly connection and functioning and my navigation apps instantly worked better then I thought they were supposed to to work to begin with. THIS IS AN AWESOME GPS DIAGNOSTICS TOOL and will be a permanent addition to my utilities folder of apps. I cannot say any bad about it at all.