It isn’t quite the same, but Embee Meter vx on Google play paid me £5 to sign up, runs in the background on my phone and pays £1 every 150 points. You can get 15 points a day and more if you run it on other hardware. It soon mounts up. I tend to redeem £1 at a time as I have been caught out by things closing down on me too many times. £1 is still handy though.