Bass Reflex by dfxware is an Android application that helps design vented speaker boxes. This app is perfect for audiophiles who want to improve the sound quality of their speakers. With Bass Reflex, you can calculate the length of the bassreflex tube and analyze existing solutions to make sure that you get the best possible sound from your speakers.

The app is easy to use, and the interface is user-friendly. The app is designed to be used by both professionals and amateurs, and it is a great tool for anyone who wants to improve their sound system. Best of all, the app is completely free, so you don't have to worry about spending a lot of money on expensive software.