This is a logo of what many would describe as a "brainstorm cloud". There is one large circle in the center. From the circle, are several smaller circles branching off in different directions.
This is a Mind Map icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,100 icons, all in the same style and quality.