Austria Danube River Navigation / Charts App offers access to nautical charts covering Donau river in Austria. All charts include POI data. It supports Marine Charts course up orientation. It has route manager to create new boating routes or import existing GPX/KML routes. Only marine navigation app to have route assistance with Voice Prompts for marine navigation. * Voice Prompts for marine navigation / nautical naviagtion (requires GPS ) -prompts when approaching a boating route marker -Continous distance and ETA updates -Alerts when sailing/boating off route -Alerts when boating in wrong direction *** For any question, contact support at gpsnauticalcharts.com / http://www.gpsnauticalcharts.com *** *Route Editing/Creation -Create routes from scratch -Edit existing GPX/KML routes. -Add custom description to any route point. -Drop markers along route. * Real time track overalay with projected heading vector * Offline charts -Visually draw area to download -Textual search -Catalog -Charts reprojected for WGS84 datum. *Seamless chart quilting of marine charts *Distance Bearing tool *Create custom way points - Using GPS -Select point on map -Manually enter latitude & longitude coordinates *POI layer for marine charts - Overlay POIs - POI list derived from the equivalent ENC and contains all categories including Buoy, Light, Harbour facility, Obstr. *Search POIs/Way points *Pan/Zoom/My Location * Record Marine GPS tracks * View tracks overlay * Live track animation * Track analytics/stats * Export GPX trcks. -Export to SDCard -Share GPX trakcs with friends. * Auto Follow Mode (Course up) -Continuously updates boat's location on chart - Adjustable update frequency Sample Nautical Charts (please visit http://gpsnauticalcharts.com/main/austria/all-all-austria-charts-nautical-charts-folio.html for complete list) 37 Charts covering the entire Danube river in Austria. Donau-1, Donau-2....Donau-37. "Continued use of GPS running in the background can dramatically decrease battery life."