had to revert to OS mavericks but i can't download iPhoto

Is there any way to download iPhoto while on OS Mavericks? I had Yosemite but had to wipe my laptop twice. Didn't want to deal with any more problems so I went back to Mavericks where I never had a problem but I need to use iPhoto. If I am unable to download, does anybody know of another good program to store and organize photos?

Thanks in advance!