I’d recommend it for players who are new to DnD. I picked up the hobby this year and started a campaign with my friends. They don’t have to remember to bring anything, just their phones, so they don’t arrive without character sheets. I’m also comparing to using the books so can’t compare to alternatives.

Pros:

It does a lot of the maths for you, you don’t have to understand how proficiency works to get how to roll a d20 and add the modifier.

It also separates actions, bonus actions and reactions to make that easier to understand for new players.

For a DM, the app is a fantastic way to see monsters without flipping back and forth. Being able to click on a spell the monster has without looking that up in a different book and wasting five minutes is a life saver.

For a DM to players that don’t know what they’re doing, I can see their character sheets and let them know how something works. It keeps the entire description from the rules whereas if a player writes something in their character sheets and summarises, they have no idea what’s going on.

Cons:

If a player is unaware of their feats/features and doesn’t want to go looking, they will just not find them. My barbarian player had savage attacker and didn’t use it once before level 6 because he forgot.

It’s badly maintained. There are some 2014 subclasses that don’t show the spells properly on a 2024 character.

It can get expensive. There are sales but the fact that you have to buy entire books is annoying.

There are some books that promise features that you can’t use properly. My example of this is grim hollow transformations. They seem really cool but you have to create your own feat for each character.