Input is described as 'is based on QGIS which means you can set up projects easily from the desktop'. There are more than 10 alternatives to Input for a variety of platforms, including Windows, Android, iPhone, Online / Web-based and iPad. The best alternative is QGIS, which is both free and Open Source. Other great apps like Input are ArcGIS (Paid), what3words (Free), Mapline (Freemium) and MapWindow GIS (Free, Open Source).
Vector Based Spatial Analysis Graphically create and edit geometric data, as with a CAD program Import Shapefiles and OpenStreetMap data Use raster images as background and a CAD drawing as an overlay Transform coordinates based on the Proj4 library.
M.App Enterprise Mobile App enables you to connect your mobile device to your M.App Enterprise on-premise installation. It provides you rich workflows to browse and modify your GIS data online and offline.