What are the apps you can't live without?

[CamGirl]

At this time, apps are the most useful thing we have, from killing boredom, organizing daily tasks, and other important things that we do every day. What are the apps you can't live without and what does it do?

[Alias]

All the pre-downloaded ones! My must-haves are the simple things:
Alarm clock - wakes me up! (or I'd sleep past noon), also reminds me to check my reminders incase I missed any
Reminders - self-explanatory, also acts as my calendar
Notes - where I keep songs I hear on-the-go, presentation scripts, etc..
Photos - the obvious (capturing pretty scenery), keeping sheet music, also is my to-do list of things that have no expiry date (e.g. download a game)

[fummymeasle]

Pinterest. I like to see things I'm interested in like house designs and interior and exterior designs.

[CamGirl]

Hi all! Thanks for your responses. Yeah, I agree, the pre-downloaded apps are very useful and they're what I also use. Maybe I'm just looking for something new or something that might be better?

I also like Pinterest or even galleries alone. I like looking at pictures and get ideas for DIY projects.