20 Brilliant Examples of Skeuomorphic UI Design app olympic app concept by Martin Schurdak ui
Mobile Portfolio Concept by CreativeDash Design Studio, via Behance
This is an unrelated app, but I think the color palette used would be appropriate for a sustainable/green mobile app.
Ticket app homescreen - by Petr Knoll
Time Billing app - Mobile Interface on Creattica: Your source for design inspiration
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