Yes, all of our apps are built with the utmost care for kids to use. Tangram, Words, Newton and Masterpiece are all certified by the kidSAFE® Seal Program. Our newer games will also be certified, but the certification process takes time.
The kidSAFE® Seal Program is an independent certification service and seal program that reviews and certifies the safety practices of children-friendly websites and applications, including kid-targeted game sites, virtual worlds, social networks, PC and mobile apps, web-connected devices, and other similar online and interactive products. You can read a bit about the program here. Official certifications are available for Tangram, Words and Newton. Thanks, kidSAFE®!