Geologists go social in high-level interactive reference.

Easy stories launch learning but have limited reach.

Stacking, customizing monsters falls short on fun, learning.

Mental math drills with targeted practice, clear progress.

Solid, simple math drills don't justify steep subscription.

Facebook-created TikTok clone has some growing to do.

Kids wiggle into songs and stories for some silly fun.

Looks-oriented friend finder risky for younger kids.

Shallow faux ghost-tracker has ads, creative community.

Adorable day-in-the-life teaches importance of daily tasks.