Best, easiest to use and reasonably priced app builder?

[NaughtyVisions]

Shit, title should say "mobile app builder."

I'm looking to make a simple mobile app for a martial arts school I do graphics and web shit for. On the mobile app, I basically just want to have the daily class times, the class curriculum (forms, kicking, 1 steps....changes daily and is not consistent month to month), upcoming events calendar (belt tests, tournaments, etc.). I also want to be able to send alerts when important messages need to be seen. This is my main focus, because these freaking parents never seem to check the website for updates or read their fucking emails.

I was looking online for some inexpensive drag and drop app builders (AppMakr, AppsBuilder), and while they were easy to use, they seem to be lacking some of what I was hoping for, mainly the "important message notification" type thing.

Anyone used any good mobile app builders that they can recommend?

[NaughtyVisions]

Nothing?

Nobody has any suggestions for a mobile app builder?