mPOINTS are units of reward tracked over a network of different popular phone apps. mPOINTS are accumulated by interfacing with these apps and can then be spent on rewards through the main mPOINTS' site.
There is no universal mPOINTS app. Users first sign up for an mPOINTS account and then download one or more of the network of apps that use the mPOINTS system. A reward button or mPOINTS feature within the settings of the app redirects to the mPOINTS' webpage where accrued points can be spent on prizes, such as a $5 Amazon gift card or a Kindle Fire tablet, or donated to specific charities.