I love Tarot apps! The first one I ever bought was not actually Tarot, but Ciro's Gilded Reverie; I have two of them in print, but sadly they are both mass edition, so they don't feature the extra cards (the app does).
Then I went on to purchase the Shadowscapes - I have the deck in print as well, but the images are so tiny! On my iPad, the images are hu-uuge and can be zoomed in even more. I really love to just browse the very beautiful images, and read from the guidebook.
All the apps that I own besides GRL and Shadowscapes are -
Print also: Vampyres, Druidcraft, Wildwood, Hidden Realm, Zombie
Only app: Bonefire, Tarot of Trees, ISIS, Jean Dodal Marseille, Druid Oracles, Dondorf Lenormand
The Bonefire as an app is only because the deck comes out in autumn and I have got to have something to hold on since then
The Tarot of Trees is on my wishlist. The Marseilles' decks were a learning effort, Druid Oracles as well, and the Dondorf just a late-night splurge.
On my phone I have the Hidden Realm and the Vampyres - the Vampyres is my daily go-to for e-readings. Funny, because I practically never take it out in real life.