There is a new version of The Snail!
The new 1.2.8 version from Ircam corrects some GUI details to make the SNAIL even easier to use. The incorrect initialization of the intensity color mode has been fixed, and a GUI Plugin UI animation getting stuck occasionally on project reloading.
The exciting news is there is a new function where you can click on the new icon which resembles a snowflake and 'freeze the display' so you can easily see how far or close you are in your tuning of an instrument or pre-recorded track.
So, you will no longer have to play the same note over and over. Or loop a section of music to be able to see how far it is from the tuning you want.