The app is equipped with 4 important FREE themes (Balance, Good feeling, Well-grounded and Protection).
Please install the "5D Flash Vital" app from the respective store and test one – or all – free themes. You can then determine whether your cell phone is compatible with this application, whether the loading process works and whether everything is displayed correctly.
You can buy other themes that interest you at any time if you like the application.
All Android systems from version 4.0 should work, i.e. all devices that are not older than one or two years.