Hey, Gunnar. The Tune-bot is a tuner with a built in microphone, mounted on a stick. The stick is useful, because it frees up a hand to work on the drum.
I have been using a tuner for years, as a check. Once I have a drum in tune to itself, I then use a tuner to discover pitch, and then adjust if need be. Trying to tune a drum to itself using a tuner is a losing proposition. There are too many harmonics and overtones in a drum, which will lead a tuner astray.
If you are trying to set a drum up, the Tune-bot is probably the long and hard route. If you are ascertaining a note from a tuned drum, the Tune-bot has some interesting features, and is probably the easiest tuner on the market to use for drums. Not worth it to me to replace my hand-held item, but if I had no tuner at all, I'd purchase one. A tuner is another reference tool.
I have been watching a group of guys over at DFO who enthusiastically bought the Tune-bot as soon as it was announced. Disappointment set in fairly rapidly:
http://www.drumforum.org/index.php?/top ... ge__st__20http://www.drumforum.org/index.php?/top ... ntry703348