When you have chosen a Program:
Tap on the Programs tab in the tab bar at the bottom of the screen and choose between the different Meal Plans & Programs.
That means: If you have chosen a Program and would like to change either the Program or the Program settings or change to a Meal Plan just go to the PROGRAMS tab again and choose the next Meal Plan or Program.
If you have chosen a Meal Plan:
To change to another Meal Plan or to a Program, please go to the PROGRAMS tab and then click on the menu top right hand and then on Change Plan.
This means that you cannot "delete" a Program or Meal Plan - but if you ever leave the Lifesum Standard Program and choose another Program or Meal Plan you can always go back to how you started off by choosing the Lifesum Standard Program again.
Note: Please note that only Premium members can change between Meal Plans & Programs. Free users are offered the Lifesum Standard Program. When you start using the app, the Lifesum Standard Program is activated by default.