meaning of red, yellow, green colours in RTTA tuner app

[cac]

The RTTA Tuner App for the iPhone (and I assume the app for the Android also) shows readings in three colours. I can see that red is the most 'out of tune', yellow next, and green the most in tune, but I can't find out what the parameters are for these displays. Nor can I find a user guide or manual for the app. In the settings, the default for yellow is +/1 7 cents and for red +/- 15 cents, but there is no default for green, and the meanings of the numbers aren't clear. For example, one can have a green colour centred on -07 cents. Shouldn't such a reading be yellow? Or does the number for yellow mean 'greater than 7 cents deviation'. Thanks, Chet

[Conical bore]

If we're talking about the same app I have - RTTATuner on the iPhone -- my app is set to Yellow Level 7 and Red Level 15, which must be the default because I haven't changed it. Green would be anything under the Yellow setting. I have read that somewhere around 5-6 cents is where most people can start to detect a change in pitch, so setting the Green color at anything 6 cents or less makes sense, although of course you could adjust it tighter if you want. I assume the threshold is based on the dot representing the average of the recorded pitch?

I hope this helps. It's a great app, everyone should try it to see how close your intonation is to 12TET when you're actually playing a full tune, and how "tight" or variable some of your notes are.

[David Cooper]

I didn't particularly want a smartphone but have just acquired one to use as a hotspot. It's Android, and I can't see the RTTA tuner app on the Google Play Store, so maybe it's iPhone only. (I've installed Chroma and Instrument Tuner for now, but they're nowhere near as good as the Japanese s8tuner for PC.)

[Conical bore]

The Android app I used before I was compelled (by family lock-in) to switch to an iPhone was called TTTuner. It has both a trial and full version: https://play.google.com/store/apps/deta ... cker&hl=en

[David Cooper]

The Android app I used before I was compelled (by family lock-in) to switch to an iPhone was called TTTuner. It has both a trial and full version: https://play.google.com/store/apps/deta ... cker&hl=en

Thanks - that one's much closer to what I wanted. I'll have to review it there to help other people find it.