• Navionics and Navionics+ are a great duo – best on test.
• iNavX is good enough to replace on on-deck chartplotter.
• MaxSea TimeZero is brilliant if you want to use raster charts.
• Transas iSailor does everything, but it all costs extra.
• SeaNav UK & Ireland offers a unique ‘augmented reality’ view using Internet AIS.
• Garmin BlueChart Mobile good for planning, but only shares with Garmin hardware.
• iBoating is surprisingly versatile, but was the least expensive on test – and it showed.

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