This is really interesting well I'm not a big fan of apple so I'm using an android and i bet so many people here using that operating system too, i guess it's gonna be awesome if you make this available on the Android version, not only ios. Love this idea when people can earn token by being active in the app, hoping that the minimum withdrawal is low. On the other hand if you want to make this project successful you might give some airdrop like you've mentioned in the op and promotion on the internet, just my thought.