Freedom to user
Spotify
Offers high freedom to users by letting them use further categorizing to get full customization by who created the playlist.
Apple Music
Offers good freedom to the users by giving the typical model of playlist categorization. Users can choose what they want.
Deezer
Offers good freedom to the user by letting the interaction be simple and straightforward. Like the other applications, there are no access restrictions.
Feedback to user
Spotify
The feature is well labeled and lets the user know the intention of each button. The user will not be confused.
Apple Music
The feature is well labeled with icons and information to tell the user what the intention of each button is. The user will not be confused.
Deezer
The feature is well labeled with information. Users will understand the intention of each button and the interaction will be clear.
Fitts’s Law
Spotify
To start, getting to the “Your Library” feature is located at the bottom right. After that the places of interaction are all on the top left. Fitt’s law is used precisely here by keeping all features relatively close and in the main zones of initial interaction.
Apple Music
Fitt’s Law is used for the later half of the interaction on this interface. The beginning half uses Fitt’s Law in relative areas.
Deezer
The buttons used during the interaction for these features are placed relatively well. Most of the interaction happens in the middle of the screen.
Jakob’s Law
Spotify
The mental model of going to a library of music and accessing features are used in this interface. There is also a consistency through the options available for the users to categorize with.
Apple Music
The application shares the similar mental model of going to the music library and categorizing the playlist.
Deezer
This interface shares similar mental models to Spotify and Apple Music for the entire interaction with this feature.
Miller’s Law
Spotify
There are 7 steps to use the categorization at its max. Miller’s Law is followed. In terms of the amount of different categories, sorting the playlist by creator has 4 options and the “sort by” has 5 options (see figure 5). In both cases, Miller’s Law is followed
Apple Music
There are 4 steps during the categorization interaction. Miller’s Law is followed. In the “sort by” feature there are 4 options. Miller’s Law is followed.
Deezer
There are 4 steps to complete the interaction of this feature. Miller’s Law is followed. The sorting feature has 5 options to select. This follows Miller’s Law.
Recognition
Spotify
The mental model is constant throughout the design and there are icons and information that explain what the interaction will accomplish. Users will not have trouble using this feature.
Apple Music
The mental model is constant throughout the design and there are icons and information that explain what the interaction will accomplish. Users will not have trouble using this feature.
Deezer
There is good information displayed on the interface that will allow the user to complete the task after using it and coming back to it after a certain time. It is straightforward.
Safety from Error
Spotify
Offers high freedom to users by letting them use further categorizing to get full customization by who created the playlist.
Apple Music
Offers good freedom to the users by giving the typical model of playlist categorization. Users can choose what they want.
Deezer
Offers good freedom to the user by letting the interaction be simple and straightforward.
Like the other applications, there are no access restrictions.
Freedom to user
Spotify
There is a Safety concern with the “X” displayed by the creator sorter, (see figure 6), here there is a concern since by accidentally clicking it, it would take you back to the start of the interaction.
Apple Music
The feature is safe to use as there is little room for error and slips.
Deezer
The feature is safe to use and there is not much room for error or slips, and the user will not likely make one.