SWADroid is an application to access some features of SWAD (http://openswad.org) on ​​Android mobile devices. It is free software, which means that anyone with sufficient knowledge can extend or improve it. The application allows: - Read notifications - Take self-assessment exams - Send and reply to messages - Check the qualifications - Registration to groups - File download - Post notices (teachers only) - Roll call using QR codes or barcodes and also manually with attendance sent to SWAD (tea