Stoyan Hristov

*** TOP 5 Kids App in 20 countries ****** TOP 5 Education App in 15 countries ***Alphabet Turtle is a great way for kids to learn letters and alphabet …

*** #1 Education App in more than 10 countries ****** TOP 5 Education App in more than 20 countries ***Practice and improve your mathematical skills w …

Meet the Happy Turtle! It is here and is ready to take your child on a funny and exciting educational journey.Turtle Math for Kids will help your chil …

All-In-One educational center for your child. Learning math has never been so easy and fun and kids just love it. Math Joy will help your child build …

All-In-One educational center for your child. Learning math has never been so easy and fun and kids just love it. Math Joy will help your child build …