Ripper Glyphs Icons

Apple introduced the glyph icons in iOS 11 and uses them for tab bar (along with regular iOS icons that are for everything else). The grid is 30×30 pixels. Unlike original iOS icons which are the outline ones, these icons consist of the the filled shapes and visually dense. If you're creating an iOS app, either download Ripper PNG icons in 3 sizes (free icons for 50 and 100px; for folks who paid there's 150px) or download a single vector icon in PDF format (you'll have to buy icons) — Xcode will generate the proper PNGs on the compilation.

Unlike other icon websites, Icons8 has the icons organized into a few giant icon sets. Inside an icon set, all symbols match each other.

Icons8 is a secret weapon of the superhero designers (you'll be surprised how many Dribbble and Behance stars use it), allowing to create the clean, balanced designs. Fast.