Proposed icon for this app, which, yes, is still alive and in development (nearly a year later).
R², known in the world of statistics as the coefficient of determination, is basically an indication of future outcomes. That's roughly what the app will (hopefully) aim to do — indicate, and help revise, the future outcome of something being designed.
(It's been years since taking a stats class in college, which I thoroughly enjoyed. Thanks to Wikipedia for helping jog my memory. Please jog it even further if I've misunderstood the basic gist of R².)
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