Do educational apps actually teach toddlers anything 2 to 5 years?

What the evidence says

Yes, but only sometimes, and it depends a lot on the app and how it's used. Canadian doctors say there is no proven boost to brain development just from putting a toddler in front of a screen. But when an adult plays along with a good app, it can turn into real learning time.

A large research summary from the American Academy of Pediatrics looked at 35 studies of children under 6 using interactive apps. It found a real learning benefit for early academic skills, especially early math, though many of these studies had gaps in how well they were designed.

A separate math analysis combining 36 studies and over 4,000 kids found touchscreen learning did help, and the amount of benefit changed depending on the child's age, the subject being taught, and the setting. A newer study in Germany gave families tablets with specially built math or reading apps for half a school year and found children's specific skills improved more than kids without the apps, though the size of the improvement was small to moderate.

There's a catch for younger toddlers though. Kids under about 3 often struggle to apply what they see on a screen to real life, something researchers call a transfer deficit. This gets better with repetition and when an adult connects the screen content to the real world.

The bottom line from Canadian guidance: choose apps with a clear learning goal that encourage your child to participate, not just watch, and try them yourself first. Reading apps and e-books can help language skills, but only when you read together, since even the best app can't replace a parent turning pages with their child.