LastDo Pro contains a private file manager. The files are only accessible within LastDo app, unless you export them. The files can be synced between your devices. We have tested the syncing functionality with file size of several gigabytes .
Any type of a file can be added to LastDo Pro. Optionally, the files can be attached to events or notes. LastDo has internal viewer for common media formats to reduce privacy problems that many other apps have.
In addition, LastDo Pro, has simple drawing and camera tools for quick and private content creation.