Band Teacher – Pitch trainer - Harmonize Review

Great app for teaching/hearing just intonation. Suggestion- 1. A way to set parameter of tones (most of the examples I listened to would be too high for students to discern) More low note intervals please! 2. Different voices that more closely resemble an instrument rather than a sine wave. 3. Ad-free version with paid upgrade. I'd pay $1-3 for the app if it had some of those tweaks. Dislike- sometimes I get three stars for being +/- 5 cents whereas other examples its on two stars. What are the guidelines for scoring?
Review by AlexMcM on Pitch trainer - Harmonize.