Table 7 Exploratory evaluation scoring of MY IBD Buddy user interface based on Nielsen principles (beta)

Visibility of system status

2

2

2

2

2

“Your progress” icon does not change after using different parts.

2

Minor problem

Match between system and the real world

-

-

-

-

-

-

-

-

User control and freedom

-

-

-

-

-

-

-

-

Consistency and standards

1

1

1

2

1

3

2

2

2

2

•The icons used for height and weight are unconventional and unusable, if you need to decrease or increase, you should use an icon like +, -.

•In this part, the form used is not expressive and the user does not understand how to apply his opinion. It is better to use a range of one to five that is illustrative.

1.4

2

Cosmetic problem

Minor problem

Error prevention

2

2

3

3

3

The lock symbol used is inappropriately placed and the user does not notice it. It is better to be on the left side.

2.6

Major problem

Recognition rather than recall

-

-

-

-

-

-

-

-

Flexibility and efficiency of use

3

2

2

2

3

Repetitive headings are used in the program, for example the sections of my experiments and sensitivities are repeated in different sections. While the function of these parts is different. It is better, for example, to change the title of the sensitivities section in my status section to view sensitivities.

2.4

Minor problem

Aesthetic and minimalist design

2

1

1

1

1

The phrase “chapter number” is unnecessary information that is displayed on the screen and it is not clear what it is for.

1.4

Cosmetic problem

Error identification, diagnosis, and recovery

-

-

-

-

-

-

-

-

Help and documentation

-

-

-

-

-

-

-

-