The PlayStation App might seem like an unnecessary addition when you can do everything from the console itself, but it is a great companion for handling the boring and administrative parts of gaming, as well as keeping up with your PlayStation contacts from anywhere.
The PS App has full access to the PS Store via the Store tab, letting you browse games, see screenshots, and add items to your cart. The biggest benefit is that when you buy a game, you can immediately download it to your console, so you can start installing in the middle of the day and it will be ready when you get home.
Beyond buying games, you can start a game on your system right before you're ready. Open the Library tab, then in Games > Played, choose a title and select Play on Console. Your PS5 must be in rest mode and the required settings enabled.
Manage your console's storage space. It's easy to run low, especially since some models only come with 825GB and external PS5 storage is extremely costly. You can view and delete old data via Settings gear on Play tab and choose PS5 Storage. Before clearing data, note the app lacks the ability to delete certain components while keeping others, such as for games like Battlefield 6, you can delete the campaign while keeping multiplayer installed.
Source: Engadget · Summarized by HeadlinesBriefing