secure calculator vault hide and encrypt file. we use AES 256 encryption for file. also added the media viewer so user can view the file without leaving the app. Supported image formats :- png, jpg, jpeg, gif, bmp, webp, svg, tif, tiff, ico Supported video formats :- mp4, mkv, mov, webm, avi, mpg, mpeg, ogv Supported text formats :- txt, csv, md, log Supported pdf formats :- pdf it's offline app with no background data collection, files stay on users device.