Dumpster is like a recycle bin in our mobile phone. They provide good application in smartphone. It is well designed app. If important data is deleted by us from smartphone then it will go in dumpster app and then from there we can relocate our data and we will get our data easily.
App created a copy of a deleted data which is stored in our external memory. And from that we retrieve our data easily. It is very helpful for images, videos, mobile apps and documents. I like it much. Just go for it.