I recommend The Selection series! I started reading it in sixth grade when my teacher recommended it to me and reread it a few days ago! Its kinda mature tho, theyre also making a netflix series out of it (;

There actually is a dogo app! idk if its been updated tho

Have you ever treated your teddy bear as if it was alive? Well, in this book, every kid's dream comes true. There is a whole league, the League of Ursus, of stuffed toy warriors that have pledged to protect their humans from monsters. One girl, Loretta, is very lucky to have Spark as her protector teddy bear. Spark takes his role as protector of Loretta very seriously. One night, Spark faces a terrible monster with a massive scorpion-like tail and horned head, but Spark is not scary enough to fight off the monster. Spark begins to wonder whether the monster is connected to the recent disappearance of Sophia, Loretta's friend. When Sir Reginald, Loretta's brother's teddy bear warrior goes missing, alone with some other children, Spark and the League of Ursus must unite to save the children and their fellow comrades. Will Spark and the League of Ursus be the victors? Or will all the children, along with the League of Ursus, go missing forever? To find out, read Spark and the League of Ursus! My favorite part of the book was how the author brought to life the teddy bears. I give this book a 5 out of 5 stars, and highly recommend this to anyone who loves a good mystery and an adventure.