Checking your AppStore page. What do you mean by create account?
Your interface looks really good and multisig too, is it possible to leave just one key on the phone and export the rest? So that signing depends on an offline computer, per example...
I'll give your app a shot when you release the source code

There's a feature that YardWallet users can send bitcoins with their email accounts. So users will be asked to create an account at first.
We just live one key on the phone and the rest will only show once when you open the vault account. Users should keep the second key in a safe place very carefully.
You can try our app with a tiny amount or leave your email account and I will send you some btcs for the trial.