My Data Manager - Description Take control of your mobile data and save money on your mobile phone bill!
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Data Usage - Data Usage Monitor | Your guard against data plan overages.
Standard Notes - A safe place for your notes, thoughts, and life's work
DataMan – Data Usage Widget - DataMan – Data Usage Widget is an application that enables its user to know how much data he has spent from the total internet package he is using.
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.