Fantasy book about twin who got to hunt each other after a certain age

[Deepak]

So I remember a book where the main character (forget if male or female) after she becomes a teen or something needs to find/hunt a identical version of her/himself who he/she never met before.im pretty sure that all the humans in that world goes through that.

[Kris]

Deepak, I moved your request to the "Unsolved" folder because you're looking for one specific book.

Is this book for teens or adults?

What is the story's time period and location?

Around what year did you read this book?

[Deepak]

I think it was for teens the I'm not sure about the time period but pretty sure it's like Modern day.i think more then 4 years ago.. sorry all my answers somewhat uncertain 💀

[Juels]

Dualed by Elsie Chapman?

[Kris]

Juels's suggestion of Dualed by Elsie Chapman looks very promising.

Google Books preview:
https://books.google.com/books?id=4-C...

Kirkus Review:
- "Violent teen dystopias are nothing new, but this debut, in which every character is or soon will be a killer, kicks it up a notch.
Ever since a vaccine gone wrong rendered the population sterile, humans have been bioengineered. In the well-fortified city-state of Kersh, the ruling Board creates a genetic double (Alt) for every newborn; they are raised in separate families. Sometime between the ages of 10 and 20, each Alt is “assigned” without notice to kill the other within 30 days; if neither succeeds, the Board terminates both. ..."