Apps like GeoExplore

Here are some great alternatives to GeoExplore by BrooksDesigns :
Rock Identifier: Stone Value
Rock Identifier: Stone Value
★3.9
Rockd
Rockd
★4.1
STAT Outdoors
STAT Outdoors
★5.0
Geology Toolkit Lite
Geology Toolkit Lite
★4.3
StraboSpot Mobile
StraboSpot Mobile
★3.4
Rock Identifier: Stone ID
Rock Identifier: Stone ID
★4.5
Colorado Trail Explorer
Colorado Trail Explorer
★4.2
Flyover Country - Inflight GPS
Flyover Country - Inflight GPS
★4.5
Geology Dictionary
Geology Dictionary
★4.5
Geology Toolkit Premium
Geology Toolkit Premium
★4.5
pLog Tablet
pLog Tablet
★4.3
Natural Atlas: Trail Map & GPS
Natural Atlas: Trail Map & GPS
★3.7
Retrace
Retrace
★4.9
Mapit GIS - Map Data Collector
Mapit GIS - Map Data Collector
★4.0
AndMeasure (Area & Distance)
AndMeasure (Area & Distance)
★4.3
LD-Log Lite - GPS Logger
LD-Log Lite - GPS Logger
★4.2