Women prefer to receive text messages from guys than get a phone call. There is that buzz and excitement they get when they hear that beep and see that sign they got a new message. They prefer it to hearing their phone ring. Also it is more convenient as it doesn’t interrupt their day.
Now the question arises that how difficult is it to develop a mobile phone application? The answer would be, pretty difficult especially if coding does not ring a bell to you. But nevertheless, there are many well established developers out there, who are experts at developing mobile phone applications and might just make the task easier for you. All you need to do is brief them with what exactly you are aiming for Android apps.