The Alarm She Set Herself: What a Shower Timer Taught Us About Kids and Time

When I built the first Remote Shower Timer, the goal was simple: stop the arguing. My granddaughter, who lives with OCD and ADHD, was spending 30, sometimes 40 minutes in the shower every morning. Reminders didn't work. Knocking on the door didn't work. By the time she got out, we were both exhausted before the day even started.

So I built a device that didn't ask her to manage the time herself. It just ended the shower — a hard, physical, non-negotiable stop. No countdown to watch, no willpower required. Water on, water off. That was the whole idea.

It worked exactly the way I hoped. Showers dropped to about 10 minutes. Mornings got quiet again. But something happened afterward that I didn't expect, and didn't ask for.

She started setting her own alarm

A few weeks in, I noticed she'd started setting a 25-minute alarm on her phone — five minutes before the device's hard 30-minute cutoff. Nobody suggested it. Nobody asked her to. She just started doing it, quietly, on her own.

At first I didn't think much of it. But the more I sat with it, the more it seemed like the real story. She wasn't managing time because a clock asked her to. She was managing time because she now knew, with total certainty, that a limit was coming whether she was ready or not. The alarm wasn't obedience — it was her own way of getting ahead of something she couldn't argue with.

A limit you can't argue with isn't just enforcement — it's information.

Why this matters more than it looks like it does

It's easy to think of a hard cutoff as just a stricter version of a reminder — the same nagging, but automated. That's not really what happened here. A reminder still leaves the decision in the moment, and the moment is exactly where kids with ADHD or autism struggle most — not because they don't care, but because stopping mid-activity is genuinely hard for their brains to do on command.

A hard limit removes that moment entirely. There's nothing to negotiate, nothing to resist, no in-the-moment choice to make. And once that pressure was gone, something else had room to grow: she started building her own sense of time around the limit, instead of against it.

The same pattern, a different room in the house

A while after the shower timer had settled into our routine, a friend came to me with a problem that sounded very familiar. His 14-year-old son was fighting him over video game time every single night. "Just 5 more minutes" turned into 40. Taking the controller away turned into a battle every time.

He asked if I had any ideas. I already had a hunch, because I'd just watched the same pattern play out with the shower — a hard, predictable cutoff doesn't just end a behavior, it gives a kid a reason to start managing their own time around it. So I built a rough prototype, based on the same thinking, for his son's gaming setup. We tried it. And it worked, for the same reason the shower timer worked: there was nothing left to argue about. The power just went off, the same way, every time.

That's what eventually became the Game Time Controller.

The bigger pattern

I don't think this is unique to showers or game consoles. Any time limit that's real, predictable, and impossible to negotiate seems to do something reminders and apps can't: it teaches kids to manage themselves ahead of the limit, instead of only reacting to it once it arrives. My granddaughter's 25-minute alarm is a small thing, but it's the clearest proof I've seen that a hard boundary can turn into a habit a kid builds for themselves.

That's the idea behind both of these devices, and honestly, the reason I keep building them.