It may be too late if you have found you’re overwhelmed with mountainous photos on your iPhone. However, it is convenience and simplicity that bring merits along with demerits.
It couldn’t be easier to take photos using your iPhone. I am also having problems finding how I look for duplicate photos. I try to organize them but since they stay in the main library I get lost. I am overwhelmed with the 9,000 pictures I have on my iPhone.