Is my boyfriend cheating? Tinder app?

So on Saturday me and my boyfriend were hanging out and I asked to see his phone and he was hesitant. I asked him why he was saying how he doesn't really like it when people are on his phone and that he has a lot of porn on it and he has dating apps that he hasn't deleted. And I instantly flip out and I accuse him of cheating and he was like look I don't use it and he was showing me the activity and everything and I was saying why do you still have it if you have a girlfriend and he kept saying that he just hasn't deleted it. And I made him delete them. Should I be suspicious?
Is my boyfriend cheating? Tinder app?
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