- Essential tool for your iPhone & iPad. - Test your 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. OSGB36, WGS84, WGS72, ED50, ED79, NAD83, NAD27 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, app developers) - Share your location by text message, email etc. The format contains all essential information for improved accuracy. - GPS Diagnostic™ is a professional GPS test and measurement utility for your iPhone and iPad.