With all the regret over PitchLab, I have been surveying Android tuners for some time (although it is a fact universally well known that I am a large proponent of using one’s ears and skill…) as some people have convincing reasons to want one.
There are none presently, in my opinion. Cleartune is moribund, and I and others are not convinced of its accuracy. DA Tuner was sold a couple of years ago to some anonymous mod that now dares to want to charge A$47.99 per year for the ‘pro’ (such a miserable word) version. All the others are just guitar tuners, of varying degrees of crudity in software design. What our group wants is multiple built in and editable temperaments, and this has become rare.
One could use the Peterson strobe app for Android, if one can tolerate the fact that they crushed the
developer of PitchLab (was he such a large threat to their business?).
The situation my be slightly better over in iOS land, but I do not know.
The good old dependable Korg OT-120 Orchestral tuner still lives, surprisingly, and now has 8 temperaments built in (which is not enough but better than only ET). That may be a possible solution.
The so called ‘tuning sets’ by TLA from Marc Vogel are still available, with absurd prices (1200 euros) and the ugliest industrial design ever conceived of, and an interface from about 1962. But they can filter high harmonics and may have some specialised use.
This is not a complete survey, but the current landscape is bleak.
Ironically, I think this is the best argument for learning to tune how everybody in past times did, by ear, and with a tuning fork to set the pitch standard.
As a software developer myself I have toyed with the idea of writing a high accuracy DSP tuning program with full support for temperaments, due to the current lack. But it’s a huge task, and judging from the current low level of interest in harpsichords apparent from our low membership, maybe the total audience for such an app is only a couple of hundred people worldwide. So the commercial economics of it do not make any sense, and I think partly account for the lack of such software. It’s too specialised, and when people expect to pay $4 for something on the app store, there’s no return on the investment in development.
And finally, there is no better integrator than the ear of the enormous complex harmonic problems with low strings, with high strings, and even strings in the middle. No electronic tuner ever gets it right. I hear so many instruments badly tuned with electronic help, although to be fair some can wield such a tool with skill.