You can use Conference4me smartphone app

The Conference4me smartphone app provides you with the most comfortable tool for planning your participation in TALE2020 – An International Conference on Engineering, Technology and Education. Browse the complete programme directly from your phone or tablet and create your very own agenda on the fly. The app is available for Android and iOS devices.
To download mobile app, please visit http://conference4me.eu/download or type ‘conference4me’ in Google Play or iTunes App Store.