Is it okay to recruit mobile software development engineers without experience?

Yes, yes, experience mainly depends on whether you understand it or not. If you have no experience, you can study on your own first, then write one or two apps yourself and show them during the interview, or you can make one Website, put the apps you wrote on it for people to download... and then write the link on your resume... The apps you write don't have to be very powerful, but they are enough to let people know that you understand what is needed to develop a mobile platform. That's enough