I was searching for better fonts and icons and ended up on Google Fonts. I was able to download the fonts for free which were under OFL. According to the included license file,
The fonts and derivatives, however, cannot be released under any other type of license. The requirement for fonts to remain under this license does not apply to any document created using the fonts or their derivatives.
If I'm using this for a commercial web application project, I need not to mention the font source and/or the license as well?
Is it advised to use OFL fonts in commercial projects with custom licenses which are not open-source?