This article was recently posted on TODAYonline (article) writing about how parents have embraced giving cash and allowances to their children through online and apps. They also use these apps to teach their children about about the value of money.
Singapore has a similar system which is the POSB buddy smart system (source 1, source 2). Kids these days really learn everything so differently and adults have to adjust their teaching styles.
Though I find it a great initiative, one sad thing is that parents will be able to track all of their expenses. I remember when I was in primary school, my mum was really strict about having snacks and sweets.
We didn't have snacks and sweets at home however, I absolutely loveeeee potato chips at that time. So when I got off school at about 2pm, I would buy a packet of chips and munch on it