As a last step, I still have to test this prototype with actual users.
First things first, I'll conduct user testing with 5 people. Why only 5?
According to nngroup study
, 5 users usually uncover 80% of usability mistakes
. For 100% you would need to test with 15 users. So we can form conclusion, that testing after 5th user tends to be wasting of the resources (money & time).
So here is what is recommended to do.. After first round of 5 user tests, I'll take the insights and will improve the prototype to get rid of those mistakes.
Once I have new improved version of the prototype, I'll conduct user testing with another 5 people once again
. This is done in order to uncover new possible usability flaws that were created with new prototype + also to uncover the rest of the 20% usability mistakes.
Then I'll craft final prototype, which I will test on more unniversity students. I plan to do this also in person, so I can observe the users and get better qualitative insights. What I would also like to do is to obtain some quantitative data from heatmaps - however for that I don't have enough resources to make it happen.