"Bamboo is a microinvestments platform that allows anyone to seamlessly purchase digital assets, like Gold and Bitcoin. It's an easy, secure, and effective way to participate in this growing asset class. All you need is a mobile phone and a bank account to get started.
Bamboo sync's your selected bank accounts for transactions. We then round to the nearest full value and easily invest the spare change from your daily expenses into a diverse portfolio of assets."
After signing up, go to 'Home' > enter NUGGET in the 'promo' section
Admin: they also have a referral program that offers a $10 btc bonus if you would like to set that up.