BASIC FEATURES FOR FREE
• Hundreds of predefined datums and ellipsoids
• User-defined datums
• Lat/Lon and UTM projections
• Real-time GPS mode for continuous transformation
• GPS position with altitude above Mean Sea Level
• Metric, imperial units and different formats of coordinates
• New Video Tutorial for beginners (Preferences -> Video Tutorial)
• Contextual hints for beginners
• Basic / Expert view switch when working with coordinate systems
• Quick LatLon/UTM buttons
• Built-in EGM96 geoid model
• Custom numeric keypad for easier input
• Automatic zone detection

PRO FEATURES (purchasable in the in-app store)
• Altitude above Mean Sea Level is displayed for manual transformations too [new]
• Elevation
• 4000+ EPSG coordinate reference systems
• Over 130 parametric cartographic projections
• Creating user-defined coordinate systems and ellipsoids
• South-oriented coordinate systems (South Africa)
• Datum transformations based on grid files (NADCON, NTv1, NTv2)
• Vertical datum transformations based on geoid grid files (GTX)
• Web mercator transformations (Google Maps, Bing, OSM)
• Batch transformation of coordinates from/to TXT/CSV files

GeoCoord User Manual
tiny.cc/geocoord-user-manual

GeoWorld PRO
https://play.google.com/store/apps/details?id=com.buildware.geoworld