Happy Numbers vs Zearn Math

Happy Numbers has no write-up on Specifiction yet; its figures are above.

Zearn Math is a web-based platform for students in grades K–8, used alongside teacher-led instruction. It provides more than 1,000 digital lessons arranged in Missions covering major K–8 mathematics concepts. Lessons combine fluency practice, guided concept instruction, visual models, handwritten problem solving, adaptive support, and mastery checks. Teachers can view progress in real time and use reports to identify where students need help; gamified practice and parent reporting are listed capabilities. School Accounts integrate with Clever for roster management and login. Zearn says it does not sell student information, use it for advertising, or use personally identifiable information to train AI models, and cites FERPA and COPPA. Listed safeguards include encryption in transit and at rest, two-factor authentication, security updates, risk assessments, and vulnerability remediation. There are no student-facing AI, chatbots, messaging, or social networking features.