We've all felt it — that moment you check your bank statement and something doesn't add up.

A few months ago, that happened to me. I went through my statement line by line and found $41 a month going to things I hadn't opened in weeks — a fitness app I downloaded once and forgot, a cloud storage trial that quietly turned into a real charge. None of them felt like "a problem" on their own. But together, they were $127 leaving my account every single month without me noticing.

And the more I thought about it, the more I realized — this isn't just my problem. It's almost everyone's. We sign up for things in a hopeful moment, forget about them in a busy week, and keep paying for months, sometimes years, without ever really deciding to. There's no dramatic mistake to point to — just quiet, invisible leaks, one subscription at a time.

So I built the tool I wish I'd had. Leakproof — an app that shows you exactly where your money is leaking every month, flags subscriptions you've forgotten, and asks one honest question: did you actually use this?

I designed it in Flowstep, and I made a deliberate choice early on — when the first version came out soft and cheerful, like every other budgeting app with rounded corners and pastel colors, I rejected it. This isn't a feel-good problem. It's money quietly disappearing. So I pushed for something with harder edges, sharper typography, one bold color — a tool that tells you the truth instead of trying to make you feel good about ignoring it.

Six screens. Real numbers. No forgotten trial left unnoticed.

If even one person catches their own $41 because of this — that's the whole point.

Built in Flowstep. @flowstep_ai #FlowstepChallenge

the OG tool ever @Flowstep