I used to play PTCGO back in the Sun/Moon era (2018/2019) completely F2P and I was forced to play theme decks as I couldn't get a decent deck without buying codes to get packs to trade for singles. With Live that horrible economy model is gone and the game can be played properly, and it's MUCH better this way. This game is one of the most generous card games out there, more than Gwent and LoR (RIP to both, you were great): the Battle Pass is only 600 gems and gives you back 50, and one of the two daily quests gives you 60 gems; that means that in just 10 days of dailies you can buy the Battle Pass which gives you A LOT of things, the first one being an often good starter deck with only a few cards missing to make it a playable deck. But not only that, this game actually has crafting, and unless you craft the full arts/alternate arts/gold cards, the price for a single isn't even that high. You start slow, but give it a few months and you'll have potentially everything worth crafting, considering that most cards in the game are not competitive or trash. I can't stop writing how GOOD the economy system is in this game, and how simple the daily quests are: even if the last update introduced more quests like "play 1 copy of specific card", which is annoying considering you have to craft that card if you don't have it, most other quests can be done in 1 or 2 games, and you don't have to win 14 games to get all the rewards (right, MTG Arena?).

Not only that: this game is so generous that every new major update (new expansion) comes with a few new bugs, often preventing you from properly playing the game for DAYS and wait for a maintenance. I'll never forget when Paradox Rift got released and there was a bug on login which wouldn't let you play unless you changed your clock Time Zone to UTC-12. With all the money TPCI makes they can't spend some to improve their game? The one supposed to be the OFFICIAL PTCG app? Shit like this happens EVERY TIME.

One more thing is the few content compared to PTCGO. I've seen many people complain about the lack of in-client tournaments (which I couldn't join anyway since I only had crap theme decks) and the lack of more formats. I don't really care about that since I only play Standard, but it's something worth noting. I'm quite sure they'll add some things, especially now that the games is out of beta, but most of all I hope to see less gamebreaking bugs (and Charizard decks) in the future.

Oh, and character customization sucks, but I'd rather have that and the bugs than a pay to play client.

I mostly play the Windows version, but the Android one is fine (except the battery cost).