Yes? You can have it at any time without it too though, but you could leave for example some oats and milk in the cooker while you dress yourself for the morning, and when you’re ready so is your gruel. (I did this once or twice when I had a rice cooker. It was okay.)
You can use them to steam vegs or make some gruels.
Personally I don’t bother, but for people who eat rice daily it’s a game changer.
You’re telling me I can have gruel any time I want it!?
Yes? You can have it at any time without it too though, but you could leave for example some oats and milk in the cooker while you dress yourself for the morning, and when you’re ready so is your gruel. (I did this once or twice when I had a rice cooker. It was okay.)