From the main tab in ZenUI Themes, you can see the current most popular themes. Also, you can use the search box to try to find the perfect themes according to your person interests. For example, you can search for 'cats,' 'cars,' 'minimalism,' etc. For each theme, you can see its size and also the modifications it includes.
Once you've found a theme you like, all you have to do to install it is tap the download button. Once you do that, Google Play will open by default, and you can download the theme you want. That said, you can also download themes form other app stores, like Uptodown.
ZenUI Themes is an interesting customization app that lets you give your Android device a unique look in a matter of seconds. Thanks to this app, you can access hundreds of themes with high-quality images from all different types of genres and topics.