My Experience: - Social networking app - Tinder style Dating app - Instagram style Photo/Video sharing app - Snapchat style app - whatsApp - Chatting/Messaging app - Shopping app - Barcode and QRCode scanning app - Geo-location based app - Traveling app ? - Restaurant delivery apps, - Health / Fitness apps, ? - Educational apps, ? - Navigation apps, - Bitcoin, Altcoin, Litecoin, .etc - Business Advertisement apps, .etc