Hi is there a slimming world app or an app you can use with slimming world without going to class, as mine is due to expire as i haven't been to class for a few weeks,
No such a beast does not exist. I set a tile on my home page for this place and come here instead. If you want a diary then you could do worse than my fitness pal (free) although I'm sure there are free food diary apps elsewhere too.
Just make sure you continue to track what you eat. Maybe do a food diary on here? Reason being that without the accountability of group it's easy to let a few bits slip here and there.