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| Visibility of system status | System always gives appropriate feedback such as by highlighting the selection of a date in a calendar or by highlighting the menu buttons. |
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| Match between system and the real world | All icons used are familiar to a normal user, so there is not any concept not following real-world conventions. |
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| User control and freedom | Every screen has an exit button at the corner of the screen to allow the user to go back and undo their actions |
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| Consistency and standards | The functionality throughout the app and the terminology used are very consistent with platform conventions |
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| Error prevention | Clicking on call when on the physiotherapist screen does not ask for confirmation before calling. |
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| Recognition rather than recall | Every window has indicators for what it is displaying. The chart windows show on the top left corner the date that was chosen and the day, which helps the user recognize what they are viewing. |
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| Flexibility and efficiency of use | The pie and bar charts are on a separate window compared with the calendar, which means that the user needs to go back to the calendar to select a day and then go to the chart windows to see the analysis. It would be better if the date can be changed within the chart windows. |
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| Aesthetic and minimalist design | All screens in the application do not contain unnecessary elements and only contain necessary functionality |
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| Help users recognize, diagnose, and recover from errors | Not applicable |
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| Help and documentation | Mostly, all buttons all over the app have a small question mark icon next to it that plainly describes the functionality. |
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