Hey Product Hunt! 👋🦈

Splash started as a present. Someone close to us was fed up with period apps full of upsells, accounts and data sharing, so we built one for them. It's named after a teddy shark from Newquay aquarium, bought on one of their first dates.

What makes Splash different

No account to start. Your cycle stays on your phone. Backup, sync and partner sharing are optional and end-to-end encrypted on the phone first (AES-GCM-256), so our server only ever holds scrambled data.
Partner sharing that's actually kind. Your partner joins with a link or QR code (no account for them) and gets a gentle countdown, your phase, and ideas for how to help. You choose what they see and can pause or stop any time.
Honest predictions. Splash shows ranges, not false precision, and learns your own rhythm.
Ready for the GP. A tidy doctor report you can print or share with an expiring encrypted link.
Safety built in. PIN lock, discreet mode, a decoy PIN and triple-tap to erase.
Cute on purpose. Light and night themes, and a baby shark who keeps you company.

It's free, on Google Play and as a web app at splash.care that works on any phone or computer. The iPhone app is live on the App Store too.

Splash isn't contraception or a medical device, and predictions are estimates. Our health library cites NHS, NICE and other clinical sources.

What feedback would help most: what would make you switch from the tracker you use today? And partners, what would you actually want to see?

Thanks for taking a look 💙