On mobile. The new Bomber's Notebook is seriously one of the best improvements to this game. I want it to be 100% filled out. I even did the Zora jar-breaking minigame, which just nets you rupees, merely because it's logged in the notebook.
A quick count shows 60 quest entries where I'm at right now (17 3/4 hearts, 22/24 masks), with 112 sub-entries (quests within a quest). I know the Secret Shrine, the Great Fairy of Kindness, and the FD mask will be another three entries, and likely seven sub-entries when you include the four moon dungeons. And in the characters section, roughly 30 NPCS are listed as having specific schedules. Of course, there are even more non-quest NPCS that have schedules (e.g. the twin jugglers practicing in different places during the day, playing cards at night, etc).
This is pokedex levels of addiction. And the writing achieves that perfect balance of brevity and wit, with not a word wasted, so I'm looking forward to reading the entire notebook once completed. Also eager to catch all the fish since they get their names, 3D models and more logged on the fishing charts at each location.
Even then, I won't be done. I'll still want to revisit bosses like Goht and Gyorg (with and without the FD Mask); race the butler at the shrine again, or the gorons at their racetrack, or the beavers at the falls; defend Romani Ranch, fend off milk bandits, march with cuccos and do the doggy races; play Koume's target game, and replay the shooting galleries, Honey & Darling, the deku playground, the jumping minigame; take the Keaton quizzes to see the other questions (there are dozens); re-infiltrate the Deku Palace, Pirate Fortress and Ikana Castle, just for fun; replay Keeta, the Iron Knuckles, the Poe Sisters, the Secret Shrine; maybe clear out the two spider houses again, or even the dungeons (refraining from using dungeon item until you find it); and of course, quests like Anju and Kafei, moments like the Rosa Sisters, etc.
It's the most replayable Zelda, by far. Every quest you complete, every dungeon you beat, can be done again, for fun, all within the same file. Yet another reason the time system is smazing.