How can I recover my pictures from Vaulty Stocks I've lost my phone. Is there any way of getting back my files and pictures which were saved in Vaulty Stocks?
I realize that this doesn't directly answer your question since it appears you don't have a backup, however I have used Vaulty, which looks like the free version of the same app by the same company, so I am assuming the method used to hide your files is the same.

If you are able to find your .vdata files you can easily convert them all back into regular files by the command line without any sort of password/pin.

Make a backup (just in case) and then put all your .vdata files in the same directory and execute:

find . -type f -name "*.vdata" -print0 | xargs -0 sed -i 's/\x6F\x62\x73\x63\x75\x72\x65\x64//


Poof. There are all your files. This definitely works for Linux, but I'm not sure about Mac. If someone can confirm this for Mac feel free to update this answer or comment and I'll do it myself.

Unfortunately (if you are actually interested in security) Vaulty DOES NOT secure your files at all! If you need real security, you need an app that actually encrypts your files with something like AES encryption. However if you lose your password there, you're sweet out of luck. That's a good thing. Just make sure you don't forget your password.