Apps like PannonRIS

Here are some great alternatives to PannonRIS by RSOE :
River Danube
River Danube
★3.4
WinGPS™ Marine
WinGPS™ Marine
★3.3
NavShip - Waterway Routing
NavShip - Waterway Routing
★4.2
Rivercast - River Levels App
Rivercast - River Levels App
★4.5
Nautical Charts — OsmAnd
Nautical Charts — OsmAnd
★3.6
PortView
PortView
★4.6
My Mid-Rivers
My Mid-Rivers
★4.1
Dipnet Kenai
Dipnet Kenai
★4.3
CPTM Oficial
CPTM Oficial
★4.5
GPS Navigator CityGuide
GPS Navigator CityGuide
★3.7
ROP - Royal Oman Police
ROP - Royal Oman Police
★4.2
96.7 The River (KZRV)
96.7 The River (KZRV)
★4.7
112 Suomi
112 Suomi
★3.8
NUSI UNION APP
NUSI UNION APP
★3.9
Camaliot
Camaliot
★3.4
Sarasota Memorial
Sarasota Memorial
★3.5