Parents looking for a single screen-time rule quickly run into different age cutoffs and advice from different years. That does not mean every source disagrees about everything. It means the organization, publication date, and kind of screen use belong alongside the recommendation.

This guide summarizes the sources linked in Baby Lock Screen’s parent information screen. It is written by the app’s developer, and the organizations cited have not endorsed the app.

What the major organizations recommend

Source Guidance for young children What to keep in mind
World Health Organization, 2019 No sedentary screen time for infants and 1-year-olds; at ages 2–4, no more than one hour daily, with less preferred. This is part of a broader guideline covering movement, sedentary behavior, and sleep. An upper limit is not a daily target.
American Academy of Pediatrics, 2026 Considers children’s needs, content, relationships, and activities displaced by media, rather than time alone. Its updated framework is broader than the older rule often quoted online.
Canadian Paediatric Society Under 2, screen use is not recommended apart from video calls with caring adults. For ages 2–5, about one hour or less of routine or sedentary use. Its guidance also protects screen-free family routines and time before bed.

Why the familiar 18-month rule needs a date

The AAP’s frequently cited under-18-month recommendation comes from its 2016 Media and Young Minds statement. The 2026 policy takes a broader approach to the digital environments children grow up in. Presenting the old cutoff as the whole of today’s AAP position misses that update.

That broader approach is not a declaration that any app is appropriate for any age. It is a reason to ask more than “How many minutes?” when deciding how a device fits into family life. See the current AAP policy for its full recommendations.

Questions to ask in the moment

For a practical decision, consider the actual situation:

  • What is on the display? A video call, an autoplay feed, and a blank screen have different properties.
  • Who is involved? Shared conversation around a screen differs from leaving a child alone with it.
  • What is being replaced? A device can take time away from play, reading, conversation, movement, or sleep.
  • What happens next? Decide how you will put the phone away rather than relying on another screen to make the transition happen.

These are questions for a parent, not a test with a score that certifies a screen as healthy. Bring questions about your own child’s development or sleep to their clinician.

Does a black screen count as screen time?

The sources above do not test Baby Lock Screen or provide a validated exemption for plain black, white, or muted displays. We cannot turn research about hours of ordinary media viewing into a precise risk estimate for a brief blank screen. We also cannot call that blank screen beneficial or “not screen time” based on research that did not examine it.

For a closer look at the difference between display properties and health outcomes, read Are low-stimulation apps safe for babies?.

Where Baby Lock Screen fits

Baby Lock Screen is a utility operated by parents. It provides five still appearances, optional dimming, saved settings, and an optional fade to black. Ordinary taps do not trigger sounds or visual rewards.

Those are product behaviors we can describe. We cannot promise that a child will lose interest, become calm, or sleep better. The app does not replace age-appropriate alternatives or adult supervision. The phone’s built-in lock also remains necessary: use Guided Access on iPhone or screen pinning on Android.

Sources and further reading