Interactive Circle of Fifths with Scales.

Quinterval is an interactive circle of fifths including the display of the corresponding scales.

A key in the circle can be selected either by touching the tonic or by turning the slider in the middle. The circle displays both the respective major and parallel minor scales. The display ranges from F-flat major (D-flat minor) to G-sharp major (E-sharp minor). A second slider can be used to move the visible circle section accordingly.
The note names can be set between german, english or italian notation.

The lower area shows the related major scale with its key signature. The first step and the sixth step with the corresponding minor scale are highlighted. The notes can be displayed with G-Clef, C-Clef or F-Clef. The accidentals can also be displayed before the individual notes.

Additional functionality is available as an InApp purchase:

  • Display the notes of the parallel minor scale
  • Display triads with their chord names
  • Playback notes by tapping on them

free, with optional In-App-Purchase
Current Version:
2.1, Okt 23, 2020
iPhone or iPod touch or iPad with OS 12.4 or later

Frequently asked questions:

The program does not respond 
One controller has always to be selected with a tab. The active controller is marked by a black arrow.

Are there any plans for a numeric input?  
Tricive was designed from the ground up without numeric input. Numeric input is not planned for future versions.

What are incircle and circumcircle? 
The incircle ofr inscribed circle is the circle that touches the triangle on all three sides. The circumcircle or circumscribed circle is the circle that passes through all vertices of the triangle. For a triangle, exactly one incircle and circumcircle is existing.