Will ios 8 apps work on iphone 4?

The ios 8 is coming soon… And my iphone 4 is not getting any updates… So i just wanna know if i'll be able to use the new apps on my ios 7 iphone 4

IPhone taking up 6.8 GB for only 214 pictures?

I have an iPhone, and I only have 177 photos and 33 videos on my phone. Yet, this is taking up 6.8 GB and I don't know why! I only have 2 GB left where my sister has 1,000 photos and she still have storage. I don't understand why this is happening, I've checked every single on of my apps and albums and everything and there isn't any hidden photos that are taking up my space. At first, I thought it might be because I had accidentally synced a movie and a TV show episode onto my phone, cause they are in my videos section, and I tried to get rid of them but every time I synced with iTunes it said there was no movie or episode on my phone. Also, when I clicked on the movie, there was that cloud icon with the arrow, and when I clicked on it, it said there wasn't enough storage to download the movie. Does that mean the movie is on my phone?
Please help!

Added (1). Sorry, I meant 210 photos.

Way to organize photos iPhone?

Is there a way to take photos out of the main camera roll and only have them in the albums or something. I want it so if I delete it from the album it deletes from everywhere

Which iphone case should I get?

Iphone 5s in gold, all the cases are the same price

my top 3 are probably the sunflower one, the one with all the rainbow dots (last one) or the one with the pineapples. Help me decide!

if it matters, I'm 15 and a girl

Can I have my iphone partially in two languages?

I'm curious if I can have my iphone in English, but have a few words or sections in German or Spanish. I know you can't in the given phone settings. Is there an app that my help me with this?

Unlocking iphone 5c with bell to rogers?

I bought an iPhone 5c off someone, the phone is with bell but I'm with rogers so I need to unlock it, is there a site that is for real so i can unlock it? And for cheap don't want to spend more money. P.s I'm in canada