Sen$e is a free Department of Defense app, full of personal finance information for Military service members and their families. Sen$e provides a wealth of information, with interactive features to help increase your financial confidence. Take the Sen$e Challenges to test your sense of personal finance topics. Exercise your brain with fun financial games. The tool is designed to deliver military and family members what they need, when they need it (be sure to use the $ as shown to search for the app).