I never tuned drums before and used only my feelings and ears to do it. But with a purchase of new drums I decided to test and tune them for a better sound. Directly with drums assembling I tuned them using this tuner. Process of tuning can be strange in the beginning as you need to understand what frequences you need for a drum, which you can find in a manual, tuner bot website or downloading an app and what is the difference between different tuning modes. First tuning of five drums took almost two hours, but after understanding the main technique it can take just 5-10 minutes per drum.
Very helpful device for those who want to tune their drums for a better sound than just a random tuning by ear. Price is suitable.