Tuning drums with TuneSpring is quite a strange feeling at first.

Suddenly you see exactly whats going on inside the drumhead as you get immediate response from the springs.  ...
... It´s no effort to tune a head perfectly equal but the real fun kicks in when you start experimenting with different tensions.  ...
... Once you found a killer sound, you just reproduce it anywhere and anytime.
No fancy devices needed.
— Robert Schmidt
   (Drummer, Engineer, Co-Founder of TuneSpring)