Anyone on here ever used 'Slendertone' on their tummy??

Well as the title says, has anyone ever used on on here and found it works?? Im getting married in Cyprus in Sept and really want a flat tummy, it seems like no amount of sit ups do the job on me. So might buy a slendertone, but really dont want to waste my money !!!
Im not over weight, im a 10-12 so losing weight is not really what I want to do, just tone up !

*just also thought if anyone has used them, do they hurt ?? and would I need to take my belly bar out ??

I have used one in the past and I think it helped, I have also used my tens machine lol, does the same sort of thing kinda, when I get the fat off my tummy I will use it again lol

just need to get the flab away first

Does it hurt shona??