This is an excellent, high-quality, responsive theme.
I am using this theme, professionally, for a non-profit organization and the resultant site is really attractive and easy to use. Its responsive design makes it much more useful than our previous site. This site is the first professional site I have created using WordPress.
I first created a child theme with a few minor modifications, added or customized some plugins and relocated the search feature. I created all of the graphics myself (I have a professional design background) and the site looks great and is easy to navigate.
The Yoko theme is easy to use, easy to modify and it is a high-quality product. You should visit the website of the company that created the theme -- Elmastudio -- as it will make you more confident about the creators of this theme and its quality. I would recommend this free theme to anyone looking for a free, clean and responsive WordPress theme for either personal or organizational use.