RingFit
A ring sizer and jewelry toolkit — precise, offline, no clutter.
A precise on-screen sizer calibrated to real dimensions, plus conversion across every regional standard — offline, no accounts, no clutter.
Buying a ring online means measuring a finger you can’t see clearly, with tools you don’t own. Existing sizers were clunky, ad-heavy, or wildly inaccurate — so people guessed, and returns piled up. RingFit replaces the printed ruler with a measurement engine accurate to the millimetre on any screen density, then converts across US, UK, EU, and Indian standards in a single tap.
Half a million installs and a 4.3★ rating, largely from word of mouth. A small, focused tool that quietly earned its place on people’s phones.