I would imagine that keto has a lower carb content. You’d need to check the site for details. Keto is often defined as less than 20g/carbs a day, so would depend upon how many meals they assume in the day.
Personally, I think this is an expensive way to acquire simple foods. Meat, fish, eggs, green veg, cheese can all be ordered either in bulk or in desired portion sizes from supermarkets and other online suppliers and if recipes are required, then I’d say that Diet Doctor is your friend - you’d likely get what you need from their free information but a few on here use their paid meal plans to good effect. More choice than a pre-prepared box too.