Quickville is not an app developed by a government agency and does not represent a government agency.
Additionally, QuickBill is not an app that delivers information from government agencies; it is simply an app that reports 'electronic tax invoices' for transactions that occurred between companies.
Related law: Article 32 of the Value Added Tax Act

QuickBill can issue electronic tax invoices. Electronic transaction statements can also be issued.

You can automatically issue an electronic tax invoice using the completed transaction statement.

You can automatically classify taxable, tax-exempt, and zero-tax items among transaction statement items and issue them as electronic tax invoices, invoices, and zero-tax electronic tax invoices, respectively.

If you initially register a joint certificate once, electronic tax invoices will be automatically approved without entering a password when issuing them, so you can issue them quickly and easily.

Even if you operate multiple businesses, you can issue electronic tax invoices for each business location.

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Quick Bill is issued in conjunction with ‘Popville’, an electronic tax invoice system operator.
To issue an electronic tax invoice, you need to sign up for 'Popville' and sign up for membership is available through the Quickville app.
Popville points are deducted when issuing electronic tax invoices or electronic transaction statements.