Storyheap - Manage your SnapChat and Instagram stories.
WhatsApp Status - An encrypted Snapchat Stories clone
Storyly - Bring superb stories to your app
FastAd Market - Advertise on any social media platform using just one Ad. Make money when you share other Ads on the timeline.
Bannerbear - Auto-generate IG Stories, Pinterest Pins and more
Messenger Day by Facebook - Share your day in Messenger