Does the Pro-Flow 4 need (a proprietary) one? I would think it would be bluetooth or USB for sure? I have a Pro-Flow 1 and it has an RJ11 (phone style) connector. Does the Pro-flow 4 have one? It looks to be a standard Android tablet. Try craigslist or Goodwill. Dont get an $$ Ipad, probably not compatible.
PCs have wireless too ya know. Requiring Android is not "universal." Apps are not "universal." I agree Apple is a mess If android was handled like regular website downloads it would not be so bad. Last there should be a way of running Android apps on Linux. But the biggest issue for us old guys is that Android tends to be smaller physical platforms......and hard to see. I've tried to find a way to run Android on a laptop, and, if possible it takes way too much fiddlinI think its brilliant. Keeps the tuner at bay in the car (in your lap) while your setting up parameters, not tethered to a PC or laptop with an umbilical cord (ala Paul's Evo in 'Fast and Furious' 1!) . And its a universal platform, no proprietary junk that can break and not be replaced. Just make sure your tablet has the required resolution! The majority of the uber cheap used ones are 800x480. Most modern ones are good enough. The Google play is just a vetted platform that prevents you from downloading a malicious app that can brick your tablet or install badware. Apple has it too but demands money for the app to be in its library. Im sure the app is free.
So keep in mind, you get phone calls and texts on that, right? Had done that on my phone-calls or texts would shut me down every time, thats when and why I got the tablet, phone calls don't go there...I would have to restart it every little thing with the phone.I downloaded the APP for my iphone, I am going to give that a shot..