Well Tempered 4+

Lots of tuning options

This app allows one to tune very precisely! Unfortunately in the newest update the list of temperaments does not show up when your iPhone is in dark screen mode (just a white screen until you guess at one and then it is entered). But it works just fine if one is not in dark screen mode! Must be a font/color issue

Developer Response ,

I'm sorry for not getting back to the comments earlier. At the time you wrote this, it should have been working great. Please check out version 3.0 that you should be a free update for you. If it still doesn't work, do reach out to me at niklas@saers.com

Needs an update !!

I agree with Duncan! When I turn dark mode off I can see the temperament list. Otherwise it is blank and kind of like a game of pin the tail on the donkey.

Developer Response ,

I'm sorry I didn't get your email. It should have worked really well on your device. Please try out version 3.0 that's available to you as a free update. If you still have trouble with it, reach out to me at niklas@saers.com

Doesn't appear to work with iPod Touch software version 4

This application is fabulous conceptually. I'm a viola da gamba player and having access to temperament tunings and A-415 is great. The corresponding stand alone tuner with temperaments costs about $200. It also comes highly recommended by some noteworthy professional gamba players. Like one of them says "tune by EAR not by EYE."

However, two caveats. The volume is a little soft for real use. Having some amplification is necessary to make it loud enough to tune. This is fixable with a separate amplifier/speakers. Worse though is that this software which worked just fine under OS Version 3 doesn't produce sound on my iTouch under Version 4. It would be nice if it were upgraded because it's basically non-functional in its current state. Too bad - it was a nice app.