What apps are the worst for kids’ brains?

Updated: Originally published March 1, 2024.

Not all apps are created with kids in mind.

Some are built for entertainment. Some are built for connection. And some are built to keep users scrolling for as long as humanly possible.

For adults, that can mean lost time. For kids, it can mean something more.

Children’s brains are still developing, especially the prefrontal cortex, the area responsible for impulse control, decision-making, and long-term thinking. That part of the brain does not fully mature until the mid-20s. When apps are designed around instant rewards, unpredictable social feedback, or endless content, kids experience them differently than adults do.

It is not about labeling apps as “good” or “evil.” It is about understanding which features may not be ideal for growing brains and making informed choices from there.

Let’s break it down.

Why do apps affect kids’ brains differently?

Research continues to explore how screen time and social media affect children and teens. In 2023, the U.S. Surgeon General issued an advisory warning that excessive social media use may be associated with increased anxiety and depression in youth.

One reason apps can affect kids differently than adults is brain development. The parts of the brain responsible for impulse control, emotional regulation, and long-term decision-making are still maturing throughout adolescence. That means children and teens may have a harder time resisting persuasive design features built into many digital platforms.

Apps are often designed around dopamine loops. Small hits of reward are triggered by likes, notifications, streaks, or new content. For a developing brain that is still learning self-regulation, that can make it harder to disengage.

Additional research says teens average about nine hours of entertainment screen time per day, not including schoolwork. That is a significant amount of digital input for a brain that is still wiring itself.

The goal isn’t to panic. It’s to understand what’s actually happening behind the screen. Some app features simply carry more risk for kids than others.

Apps with open worlds or private chat

Some apps combine open online environments with private messaging features. That means kids can interact with people they do not know, sometimes without meaningful moderation.

Examples include:

• Roblox
• Fortnite
• Rec Room
• Instagram (Direct Messages)
• TikTok (DMs and live features)
• X (formerly Twitter)
• Call of Duty

Why this matters:

• Open worlds allow unpredictable interactions.
• Private chat can create opportunities for inappropriate contact.
  Kids may feel pressure to respond or engage socially before they are ready.

Even if a platform has safety settings, younger users often do not fully understand how to use them. They may disable them to fit in with peers.

These platforms were not originally designed for children navigating them independently. If your child uses gaming platforms or social media with messaging features, it is worth reviewing privacy settings and understanding who they are interacting with.

Apps designed for infinite scrolling

Some apps are engineered to never end. There is no natural stopping point. No “You’re done!” screen. Just swipe, scroll, refresh.

Examples include:

• TikTok
• Instagram
• Snapchat
• YouTube
• Facebook
• X

This design taps into the brain’s reward system. Each new piece of content creates anticipation. Maybe the next video will be better, funnier, or more exciting.

Researchers have found that unpredictable digital rewards, like likes, comments, or viral videos, can make platforms especially compelling. When the next piece of content is always unknown, the brain stays engaged, looking for the next hit of novelty.

For kids and teens, whose impulse control and emotional regulation skills are still developing, this can make stepping away much harder than it sounds.

Over time, this kind of design can:

• Disrupt sleep
• Shorten attention span
• Increase irritability when screens are removed
• Crowd out offline play and creativity

It is no surprise that many parents feel stretched thin trying to manage it all. In fact, half of parents say managing kids’ screen time is harder than it looks, according to Pew Research. We explore that reality more in our piece on teenagers and social media.

Apps where explicit or mature content is common

Some platforms do not classify themselves as adult content apps, but explicit or mature content can still appear through algorithms, hashtags, or suggested feeds.

Examples often include:

• Instagram
• TikTok
• Snapchat
• X
• YouTube

Even if explicit content technically violates guidelines, it can still surface through:

• Suggestive videos
• Influencer culture
• Algorithm “drifts” toward more extreme content over time

When kids are exposed to adult content too early, it can influence how they understand relationships, body image, and boundaries. The concern is not only what kids actively search for; it’s what the algorithm may show them without them having to search.

Reviewing content filters, supervising social media use, and having open conversations about online content can help reduce unwanted exposure.

Anonymous apps that encourage cyberbullying

There is something about anonymity that lowers the social filter. When kids are not accountable for what they say, unkind behavior can increase. Anonymous platforms can make social rejection and cyberbullying feel bigger and harder to escape.

Example apps include:

• Gas
• Yik Yak
• NGL
• Tellonym

On anonymous apps, kids may:

• Receive unfiltered comments
• Feel pressured to participate in gossip
• Experience social comparison without accountability

Because identity is not tied to behavior, consequences can feel distant, and emotional harm can feel immediate.

If your child mentions anonymous messaging apps, it can be a good opportunity to talk openly about digital kindness and emotional safety. It is also helpful to watch for signs of cyberbullying, especially if your child suddenly seems withdrawn, anxious, or reluctant to talk about what is happening online.

What can parents do?

It is easy to feel overwhelmed by all of this. You do not have to become a cybersecurity expert overnight.

Small, thoughtful steps go a long way.

1. Delay social media

The more time kids have to build confidence, communication skills, and real-world friendships offline, the better prepared they tend to be for online interactions later.

If you are unsure about timing, it can help to look at phones that are intentionally designed as a first step. The Gabb Phone 4  is built to support communication without opening the door to social media and app stores too soon.

2. Focus on features, not just app names

Instead of asking, “Is this app bad?” try shifting the question slightly.

Ask:

• Does this app allow private messaging?
• Does it make it easy to connect with strangers?
• Is it designed for endless scrolling?

When you start looking at how an app works instead of just what it is called, it becomes much easier to spot potential red flags.

No parent can keep up with every new platform that launches. But understanding features gives you a filter that works long-term.

3. Set clear tech boundaries

Simple house rules can make a bigger difference than you might think.

• Keep devices out of bedrooms at night
• Make meals screen-free
• Limit app access based on age and maturity

You do not have to get it perfect. What matters most is consistency. Kids tend to do better when expectations are clear and predictable.

4. Consider kid-safe tech options

For families who want additional structure, phones built specifically for kids can provide communication without open app stores or social media access.

That can give kids a chance to stay connected to family and close friends without being thrown into every corner of the internet all at once.

The goal is not isolation. It is gradual independence with guardrails that match your child’s age and maturity.

How to protect kids in today’s app-driven world

Apps themselves are not the villains. But certain app features, including private chat, anonymous messaging, infinite scrolling, and algorithm-driven content, were not designed with developing brains in mind.

When parents understand how these features work, they are better equipped to guide their kids through the digital world with confidence.

For families who want an added layer of support, tools designed specifically for kids, like Gabb’s kids phones, can help kids stay connected without full access to social media or open app stores.

Technology is not going anywhere. But with thoughtful boundaries and age-appropriate tools, kids can learn to use it in ways that support their growth rather than overwhelm them.

What did we miss?

Are there any app features you’re keeping an eye on in your home? Let us know in the comments.