I have used a DBSA daily paper chart for mania, depression, and anxiety that I have adapted a little for several years. It was helpful for me to review the symptoms so I was more aware of my symptoms and could be on the lookout for them.
In doing it, I discovered I have a daily pattern of struggling the most in the morning with anxiety, so I split into AM and PM. This has been helpful to me see over time because I could see how mornings were worse. Before, I would get more depressed and feel hopeless. Now, I set mini-goals in the morning when I am struggling. If I can make it to 11 AM, it will lighten up and I will be doing better. This has been helpful in reducing my anxiety triggering into depression.
I haven't seen a pattern during the day for my mania/hypomania alone. But sometimes it seems my morning anxiety can trigger mania. Recognizing cycles and trying to weather the cycles is helpful for me. I don't think I would have known without charting.
I don't have a smartphone, but it looks like they have some apps that would be helpful. With the paper chart, it is harder to do summaries to show providers, especially in a form that they may understand. My tables of results can confuse them.