This app was mentioned in 1 comment, with an average of 1.00 upvote
MoneyDroid Pro then. It does not connect in anyway to your bank accounts, completely offline..
You may try the free version first to see if it fits your needs. Remember there're many apps with almost the same name, so be careful to pick only from this developer.
https://play.google.com/store/apps/details?id=com.shriekingraven.android.moneydroid.pro
Cheers !