Keep it 100 is an app that gives users daily information, updates, and advice on life choices that may increase their chances of living a longer life. Ruth E. Bell looks at the things that have been important to her during her 100-year journey. Moreover, she shares the things that she believes got her this far. Keep it 100 is an app that gives users daily information, updates, and advice on life choices that may increase the user's chances of living a longer life. Ruth E. Bell looks at the things that have been important to her during her 100-year journey. Furthermore, she shares the things that she believes got her this far.