iPad Pro = the brand's high-end technology.iPad Air = thin and light midrange with good quality features.iPad = "L ow cost " (generally based on a previous box with one or two improvements) first pricing.How easily one gets lost, in a nutshell, Apple now offers three lines of iPad :
Today, It is prudent to choose a used device that does not exceed 4 years of service, or an entry-level new model. In 2019 The arrival of the’ iPad Air 3 10,5″ at a very attractive price despite its A12 Bionic processor and 3 GB RAM, positioned it between the iPad 9.7″ 2018 and iPad Pro 11″. But these high-priced devices have been accompanied each year by several iPad 9,7” "low-cost", to attract tight budget. The following years, Apple has expanded the size of the iPad Pro screen to 10,5″ then recently 11″. March 2016, the arrival of an iPad Pro 9.7″ with a still more powerful processor and a memory up to 256 GB, but more expensive than iPad Air 2, do not then represented a decisive advantage for navigation use. Replaced by the successive versions Retina display, an iPad Mini 6 came up in September 2021 with a screen 8,3″ Liquid Retina and built-in with A15 Bionic processor.
It was a great tablet, with a screen that has nothing to envy to its big sister, autonomy for long days of navigation and fast power charging. The first iPad Mini in october 2012 had the same characteristics as the iPad 2. The majority of applications today only work on iOS/iPadOS 10 and next. This means no more possible updates to iOS and the eventual obsolescence of applications that developers cannot keep backwards-compatible indefinitely. Initial iPad1, historical tablets some of which have traveled thousands of miles for several years, are no longer supported by Apple, just like iPad 2 to 4 and iPad Air 1st generation. History : from iPad 1 to iPad Air 2 (2010-2015).There are now countless versions : 21 total models since 2010 in 10/11″, 6 in 12.9″, and 6 Mini 8″. Models 13″, heavy and expensive, respond more to use on the chart table than to mobile use on board. Since 2016 devices benefit from a laminated screen antireflection multicoated and a LED backlight, which allows fairly correct daylight reading, especially with a sun visor added to the case. The screens Liquid Retina high resolution became widespread and provide excellent definition on raster charting and satellite imagery. I will take an iPad Mini on a 18-25 feet, but beyond the distance between the helmsman and the location of the iPad justify maybe a screen 10 inches screen for easier reading. The size and screen resolution : iPad (10-11 inches) or iPad Mini (± 8 inches), I would say that the choice depends mainly on the distance between mariner and screen.Beware though : if you store your travel pics and videos, if you add music and movies, 256 GB or more will not be too much. But if you use raster charts, larger than the vector charting for equivalent area, therefore 128 Go are unmissable. For a strict navigation use, with applications using cartography vector, 64 Go could be enough to go around the world. Storage memory : at 32 to 512 GB depending on the version and up 2 TB for the latest "Pro", the choice is wide.With a single Wi-Fi model, you must add, either GPS Bluetooth, either multiplexer to fetch NMEA data from the on-board GPS, which limits the use of the tablet.
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