Logo Foundry - Logo Foundry is a professional Logo Design Suite App for Android and iOS that let's you create professional branding for your business in Minutes.
Mobbin - Latest mobile design patterns & elements library
Logo Dust - Free logo designs for your projects, added every week
pttrns - iPhone and iPad user interface patterns
Looka - Make a logo you’ll love with Looka Logo Maker.
Page Flows - User flow design inspiration for mobile & desktop