Now, with that said. I wouldn't use this product. Its not listed what the 'points' they give you do, so i can only imagine its nowhere near the value of being able to transfer them directly to airline or hotel partners. Im guessing its either a built in travel portal redemption they host or simply cashback. Either option is pretty garbage compared to other redemptions.
The interest is standard if you have a private bank, so its nice they give it to common folk, although i think many banks offer this now.
But most importantly, Using a debit card is risky. It lacks the chargeback and other protections a credit card has. (I could be wrong here, but I know it used to be this way a few years ago)
Anyways, dont take this as a negative guys. If anything, please continue improving your product and I will be a user. As it stands though, Its still lagging behind existing players.