The best replacement for photostream is camera roll.

The best alternatives to photostream are rated as following:
★★★★★  camera roll
★★★★  camera roll backup
★★★★  camera roll ipad
★★★  albums
★★★  iphoto
★★★  photos
★★★  my photostream
★★  icloud backup
★★  photo library
★★  photo album
  photosync

Your alternative for photostream is not listed? Suggest!
Speaking about photostream, one probably shouldn't forget about iphoto.

Other search terms related to photostream and their ratings are:
★★★★★ iphoto
★★ aperture
You have in mind a companion for photostream and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of photostream in all years. Click on graph for more.
photostream
camera roll
camera roll backup