‘They Both Die at the End’ by Adam Silvera.

I enjoyed this.
Set in a world where you get a call from Death-Cast to tell you that you are going to die within 24 hours, this is a novel about love, life, loss and making every day count.
Two teenage boys, total strangers, both looking to make a new friend on their End Day. Using an app called Last Friend, they do just that. Rufus and Mateo have just one plan: to live a lifetime in a single day.

4 Stars. Well worth a read.
Next up: Foolhardy Folk Tales