Since today, to be exactly, since simulator started, the game crashed now several times.
I choose my team
prepare the team ups
“fight”…
and the game closes itself, I see my home screen.
The characters loose the game and are damaged.
Wonderful, now my health packs have a new way I can use them. 
Anybody else who recognized this problem?
i have this problem regularly…put in tickets regularly, they also respond with you probably have too many apps running on your phone, you should clear cache etc. Like you it happens exactly like you said. Its clearly not a phone issue.
This happens to me randomly (but infrequently). Usually it’s with the first fight I start after opening the app. I wish the game would create a crash log when it happens so at least we could send it to the developers to examine.
Exactly my thoughts. A crash log would be useful. I’m angry because of the health gone into the nirvana with the characters I had on start.