Looking for an app to add videos together to make one video?

So I want to make a video of me doing smoke tricks. ( I know it's stupid) I want to add together about 10 7 second videos and I want them to play one after another with nothing between them and I also want to add my own music. I have an iPhone and I'm looking for an app that will do that.

I'm not 100% sure but maybe you could do this on you tube? This is a good question and I would like to come back and check the other answers you get. I DO KNOW YOU CAN SEARCH FOR: Motion Stop and you make videos that way… Not sure if that's exactly what you need.

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