Most learn to invest apps teach you how to tap buttons. That is not the same as learning to invest.
A good one has a curriculum, even if it never calls it that. Account types first: what an IRA is, why a Roth exists, when a taxable account makes sense. Then order types: market versus limit, and why market orders at 9:31 AM are a rite of passage nobody wants. Then diversification, fees, taxes, in that order. If an app skips straight to stock picking, it is entertainment with a login screen.
The tell is in the quizzes. A serious app asks questions that make you think, then explains the wrong answers. A shallow one asks questions a toddler could pass and hands you confetti. Learning needs a little friction. Confetti is frictionless.
Paper trading deserves a mention. Practicing with fake money sounds smart, and it is, for mechanics. It teaches you nothing about how you react to losing real money, which is the actual skill. Use the simulator for buttons. Not for courage.
My honest opinion: an app can teach you the vocabulary, but vocabulary is not judgment. Judgment comes from reading a fee schedule, sitting through a down month, and asking a human a dumb question without embarrassment. The app gets you to the starting line. It does not run the race.
I will also say the app matters less than people think. The best broker for beginners app free options all teach roughly the same vocabulary now. What separates them is whether the broker behind the app treats you fairly when real money is involved. A new investor onboarding SaaS course can fill the gaps, but pair the app with a real conversation and you cover both halves. BrokerCompare's onboarding calls are the human half. Start at brokercompare.fyi.