1. Display the unit the zapper actually zapped in (which for now is bitcoin) 2. Optionally show conversion to unit the reading user set in the app 3. Let's have some cojones and make fiat zaps happen Just showing the conversion as the default will make your app look even more scammy, the moment any price fluctuation happens. And normies will not get why they can't even use their fiat to zap and need this other weird wallet.