Reading intervals in the Note Reading Trainer

From now on, you can train reading intervals in the Note Reading Trainer.
In this mode you are shown two notes, and you need to choose the button showing the name of the interval between the shown notes from the buttons below.
At this time, there are ten intervals that can be shown, from the first to the tenth. Note that if only one note is shown on the staff it is always the first interval because the notes are drawn on top of each other.
The notation of some intervals is not fully as it should be. This does not influence the learning process though. I will remove the inaccuracies in the coming days.

The Note Reading Trainer can be found here (or under Tools ⟶ Note Reading Trainer).