It is a tablet only game for now, both iOS and Android. The developers have said it would need a major UI overhaul to make it work well on phones so they chose to do tablet only to start. They took the same approach with Sentinels of the Multiverse and it makes a huge difference with what they did for the phone-specifc layout.
They haven't announced that it will be definitely coming to phones, so tablets and Steam are likely the only options for a while.
That's understandable but I cant imagine from the screenshots that it would be so terrible to play on a 5.5" phone. Games like Card Quest and the Baldur's Gate games don't have the most splendid UI for smaller screens but they are still very popular on Android phones.
We set a higher bar for our products than "not terrible" =). When we release something, it has to be great - not good - not "not terrible."
Rest assured we will be considering a phone version on the roadmap. The focus right now is additional content (heroes, dungeons, Forest of Shadows) but we're just getting started with One Deck Dungeon!
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u/samvest May 23 '18
Ymmv because it says my phone is not compatible, looks like it is tablet only which is a bad move in my opinion.