The notes can be synchronised with your other devices via Microsoft OneDrive. Joplin is also available for Windows, macOS and Linux and all can synchronise with each others so your notes can be available on your mobile phone, computer, tablet, etc. Please see the official website for the list of available applications: http://joplin.cozic.net/
The desktop applications can be used to import notes from Evenote via .enex files, including the formatted content (which is converted to markdown), resources (images, attachments, etc.) and complete metadata (geolocation, updated time, created time, etc.). These imported notes can then be synchronised with the Android app.
IMPORTANT: Synchronisation is currently only working with regular OneDrive accounts. OneDrive Business unfortunately cannot be supported since Microsoft requires app developers to pay $100 a year to enable this, which would not make sense since this is a free open source app.
Note: Currently file attachment in Android only works, and is only enabled, in version 5 (Lollipop) or above.