Apps like PannonRIS

Here are some great alternatives to PannonRIS by RSOE :
BachApp
BachApp
★5.0
Rivercast - River Levels App
Rivercast - River Levels App
★4.6
Savvy Navvy Boating Navigation
Savvy Navvy Boating Navigation
★4.3
Nautical Charts — OsmAnd
Nautical Charts — OsmAnd
★3.7
PortView
PortView
★4.6
My Mid-Rivers
My Mid-Rivers
★4.1
NavShip - Waterway Routing
NavShip - Waterway Routing
★4.2
myAmaCruise by AmaWaterways
myAmaCruise by AmaWaterways
★4.9
CPTM Oficial
CPTM Oficial
★4.7
101.7 The River (WQRR)
101.7 The River (WQRR)
★4.8
96.7 The River (KZRV)
96.7 The River (KZRV)
★4.8
Marine Navigation
Marine Navigation
★3.6
Sarasota Memorial
Sarasota Memorial
★3.3
112 Suomi
112 Suomi
★3.8
NUSI UNION APP
NUSI UNION APP
★3.9
CityBus Lviv
CityBus Lviv
★4.8