Here are the 10 free icon sets for your app design.
Colorful Stickers – 20 Icons
This minimal icon set is designed by Dryicons.
PNG: 256×256, 128×128, 64×64, 48×48, 32×32, 16×16
ICO, ICNS: 128x128px
The Icon set composed of 43 icons, .ICO and also 256×256 PNG format.
Glyphish icons are carefully crafted for iOS tab bars, toolbars, nav bars and table rows which are also perfect for Android, Windows Mobile, websites, UI design, t-shirts, tattoos, stencils, stickers and much more.
The set includes the icons address card, bar graph, calendar, clock / time, conference device, contact, documents, draft, mail, marker, milestone, notes, portfolio, and many more.