.apk failed to install built on MAC to Android mobile

Hi guys ! am stuck in this issue for 2 days . I used windows to develop apk and never faced this issue but since i moved to mac recently i couldn’t test any of the apk in android platform. The app is not getting installed. I also checked out the signed apk still its the same. I really desperately need some help. Thanks in advance.
I used airdroid and android file transfer method both the methods gave me the same result.