Selessia AB is a small family-owned business in Sundbyberg, just outside of Stockholm, Sweden. We are parents and created our first product Nomp, a free, and commercial free online service to practice math, so that our daughter would have a good tool for practicing math. Nomp currently targets K-9 students. Nomp currently has over 8000 teachers (with over 150000 students) as paying subscribers to our premium service, Nomp Plus.