For many entrepreneurs, the startup journey transforms them into more of a generalist than they likely were in a position at a larger company. This calls for specialized tools. The vocation-centric applications and programs no longer cut it.
Productivity is essential when you have a lot on your plate. Time is money, so when an app is able to help you do more faster, it becomes worth paying for. Other apps will streamline communication or collaborative processes and reduce the friction of working in tandem with team members.
Of course, no entrepreneur is all work, no play -- taking a break will give your brain a rest, and it's important to have options on hand that let you re-center your chi.