If you met them in a Dating app you really need to be careful with you being female... That can turn out bad... I'm a guy and even I get nervous meeting people from dating apps... Just sayin
How much time have you spent with either of them? There's nothing wrong with taking your time. Just be honest with each that you aren't committing yet.
i think you need more information before making any choices eh you don't technically have to chose any of them i think you meed to get to know them more to make a proper choice