Yup, I feel safe to let the yayas and my kids ride Uber. Uber has a family profile setting that lets me monitor the trips that my yayas make with my kids. So I know kung malapit na sila o malayo pa rin sa destination. With Grab... I hate Grab. No no no! Uber only - to me it's the safest mode of public transportation for my kids.
I think it depends on how much you trust the service, as well as your yaya. If it's a new yaya, I'd rather not risk it. And as much as possible, I don't want my kids traveling alone with the yaya. I guess I'm just paranoid lol.
No. I don't. I won't too - at least not yet. With all the crimes and such, I won't be confident and feel at ease to leave my child travel with just his yaya, even if Uber/Grab is supposed to be safe.