I think you could take this further. There are multiple components to happiness that could generally be viewed as on or off. Are you feeling energized or tired

I think you could take this further. There are multiple components to happiness that could generally be viewed as on or off. Are you feeling energized or tired? Do you feel like you are doing something useful with your life? Are you achieving your goals? Do people appreciate you for who you are? Do you have enough time in the day to do what you need? Are you angry with anyone close to you? etc... The system could then total up your responses to come up with the final score for the day. Taking things further, the system can then analyze your results over time. Say once a month or so you do a deeper analysis. If you rarely feel energized, it could perhaps drill down into this further with questions about your diet, sleep patterns etc... Once it has worked out that you are not getting enough sleep it could make recommendations to boost this area and then track it's effectiveness. Now of course to do all this would require some experts to work out what components make up happiness and create the questions. Alternatively this could be crowd sourced. If everyone entered what they felt made them happy, this could then be kept in a database. The various components could be sent at random to each user to answer and the effectiveness tracked. Various machine learning algorithms could then be used to tailor each component to the individual to come up with their personalized happiness plan. Those extra features might be enough to satisfy Apple..