I made Splash for my partner.
She got fed up with the ads and subscriptions in every other period app, and asked for one made just for her. So I built it. Then it seemed a shame to keep it to ourselves.
In short: Splash is a free, privacy-first period tracker made by the Splash team at WhealBit, a small company in St Ives, Cornwall. It was built for one person first, keeps your cycle on your phone, and it’s named after Splash, the baby shark who keeps you company in the app. It is not a medical device and not contraception.
Open the app she uses
Why it exists
Every app she tried wanted something. A monthly fee to see predictions. A banner ad between her symptoms. An account before she could log a single day. She just wanted to know when her period was coming, without feeling like the product.
So she asked me to make one for her. No subscription, nothing pinging a server it didn’t need to. Her cycle on her phone, and a way to let me know when to bring the hot water bottle, only if she chose to.
That’s still how Splash is built. Every feature has to pass one test: would she want it, and would she trust it?
Why it’s called Splash
We make it in St Ives, Cornwall, and we wanted a period app that’s a small pleasure to open, not one more thing asking for your money or your attention.
The shark is a different story. On one of our first dates we went to the aquarium in Newquay and came out with a little teddy shark from the gift shop. She named it Splash on the spot.
So the app and the shark are both Splash, drawn from that teddy: round eyes, soft fins, no teeth. It cheers you on, shares tips, and gets out of the way when things are serious.
What that means for you
Nothing to pay. She wasn’t going to pay monthly to see her own calendar, so nobody else has to either. No subscription, no premium tier, no trial that runs out. Why it’s free.
No data deals. Your cycle lives on your phone. If you turn on backup, it’s locked before it leaves, and I never hold the key. What I can see.
Honest about limits. Splash isn’t contraception or a medical device, and predictions are estimates. It says so wherever it matters. Medical disclaimer.
Kind, not clinical. Warm words, no shame words, and a small shark who steps aside when things get serious. How articles are written.
Don’t take our word for it. Check for yourself.
- See what we can seeThe full list of what reaches our server, line by line. Without an account, nothing about your cycle does.
- Try the maths firstThe free calculators use the same careful estimates as the app. No sign-up, nothing saved.
- Check our homeworkEvery library article ends with its sources and the date they were checked.
- Compare the paywallsWhat Flo and Clue charge for, with the date we checked and a link to their own pages.
- Watch it changeEvery change is logged in public, privacy changes tagged. Last entry: 28 October 2026.
Splash is made by the Splash team, which is a very small team. Questions or ideas? Get in touch. Writing about Splash? See the press kit.
The app I built for her is yours too.
No account, no subscription. Open it in your browser and add it to your home screen.
