Esri ArcGIS - ArcGIS provides contextual tools for mapping and spatial reasoning so you can explore data & share location-based insights. ArcGIS is the heart of the Esri Geospatial Cloud. Try ArcGIS for free with 21-day trial.
Mobile Topographer Free - Mobile Topographer Free app provides features through which users can mark their properties right on the mobile phone screen.
Geopointe - Geopointe enables Salesforce users to gain spatial insights via maps and apply geography to business processes.
GPS Waypoints - GPS Waypoints is an app by Bluecover Technologies that comes up with features to help you in becoming a professional surveyor by taking a survey of the land for planning as well we for entertainment purposes.
ArcGIS Online - GIS
Lefebure NTRIP Client - Lefebure NTRIP Client app offers features to lets you connect to a large number of high accuracy GPS, GNSS, DGPS, or RTK in order to lo all your NMEA position data to your mobile phone’s internal storage.