Tally Connector is a mobile application that brings your Tally ERP 9 data onto your smart phone. Application uses your google drive account to keep this data securely at your own end instead of any cloud server. This make sure that your data is not going out of your access.
You need to install a desktop based software on the system having Tally ERP 9 already installed. Data collected by this Desktop Software will be synced to your google drive account and will be used by your Tally Connector mobile app.