Is there anyway to continue mile hacking and earn cashback at the same time? Possibly through the use of third party apps?

1) Shopback - It gives you cashback on your spendings on their partner merchants, and you can use your miles card to earn you miles.

2) Favepay - Works about the same way! You can link to grabpay for extra grab points too.

To add on the phenomenon of using your Credit card to top up your Grab wallet to be linked to FavePay, this is what we termed as triple dipping - provided Favepay is accepted by the merchant.

And to maximise the miles earned, you can consider using AMEX Krisflyer (3.1 mpd) and Citi Rewards (4mpd) to conduct the triple dip. This way you truly maximise the miles and cashback earned in one single transaction.

Shopback GO and Favepay gives you cashback.

And yet you can link your miles card to them so you get miles from your credit card spending

So cashback + miles!

Yes, Favepay would be a good way. Link it to Grabpay, and top up with your miles/cashback CC (take note to check if Grab is considered an eligible transaction). You will get cashback specific to what you use it for in Fave.