Hey there, Duolingo team!

I love the new update! I'd like to say thankyou It looks so cool and I love the shop and all but I hate to report that I have a bug:
Yesterday I updated Duolingo to the latest and went into it. After about 5 hours later I was playing Duolingo on my iPhone and suddenly it crashed. So I tried to get back in and it crashed. I tried multiple times and decided to stop running it. So I did that and tried playing it but it crashed after the startup again. After that I restarted the iPhone and tried, but again, it would not let me in. Now I'm playing duolingo on the computer but I decided to report this problem. That's all. It might possibly be a problem with my phone but it may not. If it's the app, I hope you guys can fix it ;)