Google photos is an app that was introduced by the Google to store the photos and in cloud storage . it have upto 15gb free cloud storage space and also u can improve the storage by payingg some amount to increase it upto 1 TB. and I have personal experience with this also its quite amazing storage that was introduced by google group . no autodelete and erase option and u can backup ur gallary with wifi and also with your cellular data . the the good thing in this is it will create auto videos and slide show options and many more u cant afford by reading this go and use this .and the last and fina thing is u dont need to download this its a system app in every android devices and ist going on updating for new