I tried Blue Apron for a week.
A friend uses it, and loves it. She is single, mature, working, socially active, and it fits her lifestyle. Each meal is portioned for 2 people, and she gets 3 per week. She either make 2 meals out of it, has company, or gives something away. Blue Apron sent her some gift certificates to give her friends, and she gave me one.
When I ordered my free week, I was able to select 3 meals from a choice of 6 offered. They arrived in styrofoam, with ice packs, and much individual packaging. Even an egg was carefully and singly packaged and arrived intact. Of the 3 meals, we found one very good, one OK, and one we didn't like.
Although the portioning is done, the prep isn't. They were all very labor intensive, not because of the normal prep, but because of the selected recipes & ingredients. For example, we were to slice 2 radishes into paper thin slices. But the radishes were of some special kind (I forget what they called them) and they were the size of a dime. Difficult for my old fingers!!! Many other ingredients had similarly tedious prep. Although they were supposed to take 30 minutes, all 3 meals took 45-60 minutes to prepare - and one of these was just a grilled sandwich!
The advantage is that if you need 2 radishes and 6 Brussels sprouts, that's all you get. Same with spices that you may never use again. So you don't end up with all the excess going bad or getting old. You get to try different foods that you might not think of in your rotation. Many of us get used to the same dozen dishes, and this keeps you out of a rut. All of the proteins & produce were very fresh - better than some of the produce at Publix.
The cost is about $10 per meal per person. We eat out A LOT, and we can't eat out for that. So if you compare it to the cost of eating out, it's great, and for many single folks or empty-nesters, eating out is common.
As a routine, I probably wouldn't try Blue Apron again, but I did explore some of the others. A couple others were of more interest and had more variety and flexibility. For us, it could be a viable choice occasionally. I wouldn't do it every week.
If I were to do it again, I would probably choose Plated or Home Chef.
YMMV