Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
ClevNote - ClevNote is an amazing mobile application that helps you to write the daily memos on your smartphone.
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Notes with pictures - Notes with pictures is one of the best mobile apps that enable you to write notes and add images, voices, videos, and attach documents to your records.
Ticket Tailor - Ticket Tailor is an easy-to-use event ticketing platform that allows event organizers of all shapes and sizes to sell tickets online.
Notepad by Splend Apps - Notepad by Splend Apps is one of the best mobile apps that enables you to create a to-do list and notes.