iOS: If you have a load of photos on your phone and in different cloud storage services, YoVivo wants to give you a place to streamline, organise and share them all easily. The app connects to all of your storage lockers and lets you share any photo with any network, build slideshows, and share those too, for free.
YoVivo supports Facebook, Instagram, Flickr, Picasa/Google Photos, Dropbox and OneDrive right now. You can connect as many or as few as you want, and once you do, you'll have a single photo stream where you can manage all of your photos on all of those services. Tap any of them to share them with other social networks (so you can share a Facebook photo with Google+, for example, or a Dropbox photo on Twitter), or enable encryption to lock those photos down before you send them from one cloud locker to another.
You can also use YoVivo to create slideshows or full videos of your photos, set to music, right on your iOS device. The app allows you to apply filters, edit the photos before you add or share them, add text or emoji and then share them directly with friends or send them a YoVivo link. For now, the service is completely free (they're trying to get on their feet right now) but in the future they're planning their own cloud storage service and some other premium offerings. If you want to give it a shot, you can grab the app from the iTunes App Store to try it out.