Sports betting now hides inside apps that look like investing.
Answer five questions about what you've noticed. In two minutes you'll know what to look for and one thing to do tonight.
Kalshi's minimum age. Most state sportsbooks require 21.
Source: Fortune, Aug 2026of 18 to 22 year olds have bet on sports at least once.
Source: NCAA survey, May 2023a month: Kalshi's new deposit limit for users aged 18 to 20.
Source: Covers, Oct 2026How the check-in works
Answer five questions
About your child's age, what you've noticed, and any money surprises.
See your result right away
The real count of signs you noticed, what they mean for your child's age, and one step for tonight.
Get the full guide if you want it
Optional: we'll email a fuller report. Your answers stay on your device.
What's really on their phone?
Five questions, about two minutes. Built on the warning signs clinicians use, written for parents. It's education, not a diagnosis.
Why we built this
Prediction markets and pick'em apps changed the rules faster than most parents could follow. A 19-year-old can't bet at DraftKings in most states, but can trade on the same game on Kalshi. Most of what's written for families still describes casinos and bookies.
The Guardrail Co. is created by a registered nurse and epidemiologist. Every sign in the check-in maps to the criteria clinicians use, every number has a source, and the guidance respects both you and your child.