Hi Enpass Team,
Thank you for developing Enpass. I am on the process of switching from a long-time 1Password user to Enpass and have to admit I like it so much more than the others I have tried out. After trying out a while, I would suggest to improve a bit regarding Enpass's UI. Instead of waiting for the user to click 'Unlock', Enpass can automatically unlock if the entered PIN/master password is correct, otherwise, issue a vibration or sound to inform the user to retry. That would save one step and make the interaction flow smoother. It's actually the behavior of 1Password and I have found that it's truly convenient for users.
Just my 2c hoping to improve Enpass.