Map Discovery iOS, Android and Windows -
Advanced Geospatial Data editing and creation app (Mobile GIS) with support for OGC WFS-T and local vector GIS files like GeoJSON, Shapefile, GPKG Vector features, KML, CSV, GPX and has attribute grid with search and ability to define properties for data collected. Many advanced tools for analysis and many advanced widgets
https://mapdiscovery.techmaven.net/