We launch tonight at 12:01am: a private period tracker for teens, built by a mom and her daughter

Hi PH community,

I'm Laura. My daughter Mia and I launch TeenCycle tonight at 12:01am, and I wanted to share the story before it does.

It started at our kitchen table. I went looking for a period tracker for Mia, and every option was either an ad-supported data funnel, a subscription, or a gamified habit tracker asking a teenager to keep a streak about her own body. None of it felt right for my kid, so we built the thing we actually wanted.

TeenCycle does one thing well and nothing else: a calendar and a prediction of when the next period is likely to start. That's it. Everything you log stays on the phone — no accounts, no cloud, no analytics, no third-party SDKs. Private by default, not as a setting you have to go find. Even I can't see it.

The hard part wasn't adding features, it was choosing what to leave out. No login. No social feed. No insights dashboard. No notifications nagging you. The restraint is the product.

We're a mom and a teenager, no funding and no team, and we shipped it to both the App Store and Google Play. 7-day free trial, then $9.99 once. No subscription.

If a calm, genuinely private tool for teens sounds like something worth existing, a look or an upvote when we go live tonight would mean a lot to us.

Here's the page — follow it now and it'll be ready to upvote the moment we launch at 12:01am: https://www.producthunt.com/products/teencycle

I'll be around in the comments all day. Happy to talk through how we keep everything on the device, why we charge once instead of subscribing, or anything else you're curious about.

Thanks for reading,
Laura