SI.GO is an Android app developed by Empresa 1 that offers a range of features for hassle-free public transport. With the app, users can generate single tickets to pay the fare via their mobile phone using QR Code or NFC. They can also buy credit to recharge their transport cards. Furthermore, the app allows users to register or re-register (benefit users).

It's important to note that not all features are available in all cities. Users can check with the operator of the transport system to know which features are available in their city.

The app is free to download and use, making it accessible to everyone.

Overall, SI.GO is a useful app for those who use public transport regularly. It saves time and effort in buying tickets and recharging cards. The app's user-friendly interface makes it easy to use, even for those who are not tech-savvy.