This latest update also makes it much easier to convert your data between formats both when duplicating data sets on-device, and when sharing/exporting data sets. No need for a round-trip to the Settings view to change the output format now.
Also notable is that you can now split a track line (and related track points) into two lines (and two sets of related points) at a vertex/point. This is super useful for managing tracked bushwalks' data! There is no longer any need to export to a desktop GIS, hack about with the data, then re-import to achieve this.
Bit Map is an advanced mapping, navigation and GIS app which can use a vast array of online map services and offline spatial data formats. (It is available for Apple devices only, and keeps most of your settings sync'd across multiple devices.)
For more information, the Bit Map home page is at http://nixanz.com/bitmap/ and says stuff like:
Bit Map is the original custom map navigation app, being first to provide navigation with arbitrary offline maps in 2009.
Rebuilt from scratch for version 7, Bit Map now supports a variety of online vector and raster map services including WFS, WMTS, TMS and XYZ/OSM-compatible services, as well as several offline vector and raster data formats such as GeoPackage, Shapefile, File Geodatabase, GPX and KML.
Map images can be imported and used as map layers with 4 methods of georeferencing available. Existing georeferencing will be automatically used for some image types.
Bit Map can even produce beautiful web maps that are easy to use and automatically synchronise layers from your device to the web map after the layers are updated!
Bit Map is built on a true GIS foundation and can manage data in hundreds of different coordinate systems, projections and geographic datums. Layers with different projections can be displayed simultaneously in the same map.
Bit Map is still available for FREE on the first day of each month until the end of 2023. So, even if you don't want to use Bit Map now, download it for free while you can and then delete it. That way, if you do wish to use it in the future, you will not be charged for it again later on, when it is no longer available for free.
(I can't take credit for the ability to write to file geodatabases. It was all done in a recent update to the amazing open-source Geospatial Data Abstraction Library (GDAL) which Bit Map uses for managing spatial data. GDAL also does a lot of the heavy lifting in the popular QGIS application.)