Dartsia is a mobile application which aims to allow users of the sia ecosystem to access a Renterd node and be able to interact with it. The Sia application platform is full of a wide range of software to enable the storage and sharing of data and among these software, renterd is the most efficient. Renterd allows users to store data on the Sia network and also to be able to interact securely with the network, but the problem that arises in turn comes from the fact that users of mobile devices do not have the possibility of accessing the network from their phone. It is for this reason that we considered creating an application that would allow easy access to a renterd node (even for novice users) while ensuring the security of their data.