About

Why we built it

Premium metal fidget toys are beautiful and expensive — magnetic sliders and haptic coins routinely sell for sixty to five hundred pounds, in limited runs that sell out. They're also, inevitably, at home in a drawer when you actually want one.

So we modelled the mechanisms instead. Not the look of them, the physics: how a magnetic detent builds resistance then releases, how a bead ratchet gives exactly nine clicks per revolution, how a bearing decays. Then we drove the iPhone's Taptic Engine from that model and synthesized the sound live to match.

What we won't claim

We don't claim this treats ADHD, improves focus or reduces anxiety. We looked into it properly and the evidence isn't there — the most rigorous meta-analysis of fidget devices found an effect close to zero, and one careful classroom study found fidget spinners made attention worse.

We've written all of that up rather than quietly ignoring it: does fidgeting help focus?

What research does support is simpler and more honest: people find repetitive movement satisfying, and value being able to do it. That's the whole pitch. It's a nice thing to fidget with, and it's free.

Privacy

The app collects nothing at all. No account, no analytics, no adverts, no network requests. It works offline because it never needed to be online. This website has no analytics or cookies either.