The following formats are natively supported in GeoView Pro. Please feel free to leave a format request on our support page.

Files
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Image layers: PNG, TIF, JPG, PDF, GIF, BMP, XBM, GEOTIFF
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Grid layers: Binary & ASCII GRD (multiple vendors), GXF ASCII, Multiple Arc/Info formats, ARX, DEM, E00, GIS, DOCQ, DT1, DT2, DT3
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Shadow layer: Geosoft Binary Shadow, Automatic (from all supported grid layers)
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Vector layers: Geosoft Binary Plot (PLT), DXF, KML/KMZ, GPX, GZ, GTZ, GTM, GML, PMF, SHP, BNA, MapInfo TAB
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Markup layer: KML (editable if created in GeoView Pro)

Web Mapping
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Apple Map: (requires an Internet connection)

GPS
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Internal: Built-in GPS on iPad or iPad mini