A free app for Android, by TraceFacil.
You can calculate boiler layouts using TraceFacil without leaving your desk. Best of all, you don't need to connect to the internet.
TraceFacil employs design best practices to optimize app usability, providing our users with a comfortable, simple, and intuitive environment. In less than a minute, you will have the outcome of any tracing. You can accurately calculate any layout from anywhere, without needing to connect to the internet.
TraceFacil is based on the idea of simplicity and convenience. That is why it was critical that this app be easily accessible to all users and allow them to work on their projects even when they are not connected to the internet.