Welcome to the community! Thanks for posting.
Do you mean a Windows Phone app?
Never say never, but..... currently fewer than 1% of mobile phone users in the UK have a Windows phone.
So, for a new energy supplier like us, we need to prioritise our resource to be as beneficial to as many people as possible.
If more people start using Windows phones, then we'll review this, of course.
Hasn't Microsoft recently said it's going to stop developing its mobile operating system?