Paint & Fold: close the Duo to press a butterfly print
James Davie's Paint & Fold: dab paint on the open screen and close the phone, and the cover shows the press at work. Open it again to find the colours spread and mirrored across the crease, like a butterfly painting.
By James Davie Added Original on paintandfold.app
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Jack Yu's inspection app, not out yet, stacks its test actions on the cover and sets them beside the start panel when open. Its touch test packs smaller cells into a band along the crease. Simulator screenshots, with sample data.
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