Designed by Carrois Apostrophe
Designed to integrate with the character of the FirefoxOS, the Fira typefaces also aim to cover the legibility needs for a large range of handsets varying in screen quality and rendering.
The Fira font family comes in a Sans Serif with 4 weights (Light, Regular, Medium and Bold) all accompanied by italic styles. The package also includes this Mono Spaced variant with 3 weights (Regular, Medium, Bold.)
See the Mozilla FirefoxOS Style Guide for more details.
You can download font files directly and install them with Font Book. However, it’ll be much easier to install these fonts with RightFont — the best font manager for Mac.
These fonts are licensed under the Open Font License.
You can use them freely in your products & projects - print or digital, commercial or otherwise.