A poor calendar app can easily make you less productive. If you find yourself in that situation, the Sunrise app is the solution. The app has an interface that is very easy to navigate and connects seamlessly with all major calendar services.
This is my crazy mess aka Future Planning. Never been a fan of monthly or even weekly spreads, I use the Sunrise app to plot all future appointments and tasks, the appointments go in when I find out about them and tasks usually go in the night before. I love collecting post-it's and it's a shame not to use them so they help me keep track of the important stuff coming up. Any little quirks your bujo has that isn't traditional?