Brand loyalty is a hard thing to overcome, doesn't matter if it's off road toys, pickups, or electronics. I was forced to use an iPhone 5s some years back for work, while carrying an Android based Samsung concurrently for over 3 years. The way each operating system is setup the two devices are counter intuitive to each other in user interaction. Getting past that alone can be dammingly frustrating for the first week of use in my case I hated the iPhone as it's functions were bassackwards to what I was used to. Still through required use I mastered it begrudgingly.
That being said until the last few versions iPhones were comprised of internals made by Samsung, screens, memory, processors, cellular and WiFi chips, etc. But even with both devices having share a common components supply I would regularly get dropped calls on my iPhone as emails or other data came in, most of that has been addressed but still a problem as late as 2016.
I can also attest to what @Lifetime-Trailmaps is saying about functionality as a GPS in that all iPhones inherently use location based tracking relying equally on hitting WiFi and cellular towers to verify what the GPS chip is reading, that particular piece of hardware if far inferior to the GPS components of the Samsung devices who not only track up to 12 US lanched satellites concurrently but also track the Russian Glosnass satellite's as well for a failsafe. This provides the best possible solution for accuracy of position, tracking, and recording of routes which it what you want from a GPS solution in BFE of unfamiliar territory.
However with that functionality comes the caveats of personal privacy etc., for example with all Android devices and especially phones, they have your phone number, namely address, and all other personal information people put in them. That device tracks where you are, where you go, how long you were there, and now paying by devices how much you spent at a location, not to mention all the online search information tied into that device. This alone is the biggest reason many hate Android. But for this topic of conversation you can use a tablet for a GPS and keep it totally separate from your identity, it just takes discipline.
If privacy with Android is your concern, just completely disassociate your identity from the tablet as a GPS from your information. Do not set it up for any email accounts you have ever used on a phone do not enter contact or cell phone information, do not use the device ever to buy anything online, etc. any of those activities will link back to who you are and tie the phone and tablet usage together. For the purpose of lifetime trail maps use, create an email used only for updates keeping your identity out of it, you'll have to jump through a few hoops but it is possible. The most important thing is discipline to use the tablet only as a GPS device keeping Wi-Fi disabled 99.99% of time only turning it on for updates as little as possible.
Thats my humble take on the matter of one standard versus the other in the iOS and Android debate.I won't even get into Apple slowing down and even crippling older devices forcing buying overpriced upgrades, that's the true evil and proven fact.
As far as what @Lifetime-Trailmaps is offering, it is well worth the investment of what you get for a turn it on and it works solution. You could piecemeal together what he has assembled map wise but it would take dozens of hours of your time to do so. The service Chris provides far outweighs the initial cost of the pre loaded device and the support offered afterwards.
