Simple Android app to tell ticket if is valid or not

Hi, I already developed UI, have images mockups how app will be exactly.. I like modern design. Just follow my mockups I have ticket sale website, app will read and write informations on website database My propose is check qr code tickets and return if it's valid, not valid or duplicated My focus here is simple app but with good design 1: login: will use same login database of my website 2: will show events cards that was created by organizer (created on website), will just retrieve data from website (event poster, event name, etc) 3: if user click on event card, will open screen that will show list everybody that bought ticket for this event (showing name, email and ticket value), all will be retrieved from my website database 4 will have bottom to scan QR CODE, by this number will check it on my website database and it will return 3 possible messages: valid, not valid or duplicated This communication need be secure, because will be used for ticket authorization.. App will work offline This first project is very small, after I will develop big iOS and android that will be mobile version of my website available for android and iOS, if I like work made by selected freelancer, I will make all my projects with him, because I aways will make app better and better.