The 2011 Flow app icon, credited to MetaLab, as printed in The iOS App Icon Book on page 13.

The iOS App Icon Book · Printed page 13

Flow

This is the Flow app icon from 2011, credited to MetaLab, as it appears in the printed The iOS App Icon Book.

Credit: MetaLab ↗
Book: iOS edition
Artwork year: 2011
Printed page: 13

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More versions of Flow

The 2014 Flow app icon, credited to MetaLab, as printed in The iOS App Icon Book on page 13.