Average Sans
Google Fonts · Eduardo Tunni · 2012

A self-consciously plain humanist sans-serif that prioritises readability and neutrality over any distinctive voice.
About
Average Sans is the companion to Average Serif, sharing the same design philosophy of statistical typographic anonymity. It performs adequately in UI and body copy contexts where a clean, unobtrusive sans is required without strong stylistic associations. Its single weight limits its usefulness in more demanding typographic systems.
Classification
Average Sans mirrors the neutral philosophy of its serif counterpart, offering clean, unassuming humanist sans letterforms with even spacing and modest character. It lacks distinctive quirks, functioning as a transparent vehicle for text.