DeclaTime is a cross-platform app built using Flutter.
It is an app that helps you keep track of your short-term leasing and also make it easier for you to make the required monthly declarations ( if you are based in Greece ). Things you can do:

Import your reservations from a .csv file ( Airbnb, Booking.com ) or manually and store them on your device for when offline

Authenticate your taxis accounts

To import data related to short-term leasing and make it available offline ( properties per account and declarations per property )

To declare your monthly reservations, easily and fast. Simply import the .csv file provided by the platform, then select last month's reservations and finally click "Declare". It's that simple. No worries about typing mistakes.

Analytics

Gain useful insights about your performance and financial data.