EventPilot currently supports natively:

iOS 11 and higher (including iPhone, iPod Touch, and iPad) natively. (Note: Vintage and obsolete devices are not supported)
Android 5 and higher natively (also compatible with Amazon Kindle Fire). Note:  The app may partially run on older Android OS versions (Google WebView is required - latest Google Chrome app must be installed), but is not supported.

See current statistics for Apple iOS version distribution and Android version distribution.

Need help finding out what device version you are on? Check out this article.

Note: Some Android devices with limited memory are not supported (e.g. Moto G4 & MotoG5 in cases of large events). In this case, please use the mobile web version.

Web App for all other devices (such as Windows Phones) and Online Planner for desktop are supported on: 

Chrome 10+, Safari 6+, Firefox 10+, IE 11+, Opera 12.10+

Some features are only available in the native meeting apps. Blackberry devices are not supported.