I'd also add the model that's essentially the same as shareware (also popularized on PCs and other home computers). It's not as common as I'd like but on both

I'd also add the model that's essentially the same as shareware (also popularized on PCs and other home computers). It's not as common as I'd like but on both PC and mobile, I occasionally run across games or other applications that offer the first 10 levels (for example) out of 100 for free and then you can choose to buy the full game after getting a chance to try it out. Or maybe the first chapter of an interactive story game or the first third of a point-and-click adventure. The point is still the same and some non-game programs do similar things (free version gets the main function, paid version unlocks all of the more specific options of features). I really like this model because I'm not buying a game or application sight unseen but I also don't need to keep feeding it quarters in order to progress. I have no problem buying software on PC or mobile but it's a lot easier to buy something without reservations if I know it's what I want. Likewise, when I buy something, I generally want to buy it once and not get stuck in a cycle of endless microtransactions or open-ended subscriptions. I'm sure I'm not the target market but when I play a mobile or PC game, I find myself wanting to pay when it's something I enjoy or find useful. But if a game uses microtransactions (pay to win), I basically refuse to ever spend any money on it at all and just play until it gets old and then move on to the next distraction.