The Windows Phone app, which has gone free next as myAppFree app of the day is Kyms Calc. This is a standard and working calculator app, By this you can easily hide and protect your photos , videos, recordings and so much more.
So download it now and save $1.99.
Kyms Calc Features:
KYMS offers also an integrated web server to let you browse or import protected files from your Pc or Mac.
With KYMS you can hide and protect:
★ Library Photos
★ Internet downloaded images
★ Internet downloaded Videos
★ Audio Recordings
★ Personal PIN and PASSWORD in protected TXT files