I hope the delay in launching the mobile application does not take long enough, you are right not all are interested in the application, but you also have to fulfill it because it is your initial plan and it must be done
I doubt if there is real need of it. Gold token either serves as holding purpose or for exchange for holding you can use any ethereum wallet/app to store it (already many available), and for exchange instead of making one from scratch they could rather partner with established wallets (their own web instant exchange takes few minutes anyway).