Hello Jackson, I am sorry to hear that your phone will not support the Army fitness app anymore. My advice to you would be to create a fitness programme yourself based on the tests you will undergo at the selection. Visit the URL below and it will provide guidance on the types of exercises you can be doing to prepare. https://apply.army.mod.uk/how-to-join/can-i-join/fitness/physical-entry-standards I hope this helps! Zoe