This is a widget that simply displays the number of Bitcoins that can be purchased from today's rate based on the set amount when purchasing Bitcoin using "Dollar Cost Averaging". Once installed, a widget will be added, so place it wherever you like on the screen. The size is small, 1x1.
When the widget is displayed, tap the BTC price at the top to open the settings screen, and tap the number of units available for purchase at the bottom to update the display.