[Q] Are these apps illegal?? topic

I use these apps very often and I was wondering if they are illegal heres the list,
1. lucky patcher
2. Movie Box
3. Popcorn time
4. XBMC
5. Modded Google play store

Notice I received an email from Buckeye express saying that I watched in illegal movie, which came from the app popcorn time. But they mentioned nothing from the app movie box.