Within the Apple ecosystem, iCloud is the default cloud storage system that keeps a version of your all photos online. What’s important is that, if you use both, you may have different content in separate locations. So in the battle of iPhoto vs Photos, it doesn’t make a huge difference which one you use. Just so you know, the iPhoto app will still work if you already have it installed on your computer. So the first step now would be to open Photos from your Dock or Launchpad and take a look at Albums to see what you got in there. Most Mac and iPhone users used to the iPhoto library may be asking, “Where are my photos on my Mac now?” Truth is, with the OS X 10.10.3 (Yosemite) release, the new Photos app has effectively replaced iPhoto for Mac. Try free ✕ Where Are Photos Stored On Mac?