The Hypervolt can be a great recovery tool and a way to help alleviate pain. There are many other options for percussion instruments on the market like the TimTam, Theragun and many other brands. I personally like the Hypervolt the best due to the quietness and feel of the depth of travel. It comes with many attachments and is easy to fit in a gym bag, just be careful not to crack the battery pack.
Make sure you play with different angles and use it on muscles, if you pound it over tendons that are upset you can piss them off more.