The ethics

Why ads in kids apps are an ethics problem, not a UX problem

By Ryan King · Updated June 2026 · Plain answer.

Children under eight cannot reliably distinguish advertising from content. That fact is not new. The kids edtech industry has built around it anyway.

What children actually understand

The Federal Trade Commission, the American Academy of Pediatrics, and decades of developmental research converge on the same conclusion: children younger than seven or eight cannot reliably tell the difference between advertising and editorial content. They do not consistently understand persuasive intent. They process advertising as truthful information about the world.

This is not a cultural failing. It is a developmental fact, like not yet being able to do long division. A child who watches a 30-second ad for a sugary cereal does not weigh the claim against alternatives. They learn that the cereal is good.

What an in-app ad in a kids game actually is

It is the deliberate placement of a persuasive message in front of a person known not to be able to recognize it as persuasive, by a publisher who is being paid by a third party in exchange for that placement. Whatever else can be said about it, that is the structure.

The FTC's revised Endorsement Guides require influencer marketing to be clearly disclosed. The COPPA Rule restricts what data can be collected about children. The Children's Television Act limits ad time in kids broadcasts. None of these protections meaningfully apply to the four-year-old playing a free-to-download iPad game with banner ads and a 30-second video reward.

The 'they need to make money somehow' defense

The argument the industry offers is that ads subsidize free access, and that parents who object can pay for a no-ads tier. There is a version of this defense that is genuine, especially for small developers who need scale. There is also a version that is laundering. Most large kids apps that run ads make far more from advertising and in-app purchases than from any premium tier.

More importantly, the argument is not really about money. It is about what the developer believes about children. A developer who believes that children deserve protection from persuasion they cannot decode does not run ads to children, full stop, and finds another business model. Several do.

What honest alternatives look like

One-time purchase, modest price, no ads, no IAP, free updates. This works. The boys played Originator's Endless Alphabet for a year and the company has been doing this since 2012. Khan Academy Kids is free and entirely ad-free because the parent foundation absorbs the cost. Teach Your Monster to Read is one purchase with no ads. Several smaller studios run the same model.

Cairn is also that model. $3.99 once on the iPad, no ads, no IAP, free updates. Building software a child can trust costs money. So does buying a stroller. Parents pay for products that do the right thing all the time. They just need to see the option.

Why this is a brand position, not a tactic

It would be perfectly easy to add a banner ad to the bottom of Cairn Read. The revenue would dwarf the App Store sales for a long time. We will not. The children playing the game cannot consent to it, and shipping the banner anyway is the line we are not crossing.

If that argument seems obvious to you, you already understand why a publisher of honest kids software needs to exist.

Sources: Calvert (2008), Children as Consumers, The Future of Children; FTC's Marketing Food to Children and Adolescents (2012); AAP policy Children, Adolescents, and Advertising (2006).