When considering which shared calendar app to use for your business, look for one that has the following qualities and features: Shared calendar app features you should look for Shared calendar apps have emerged to make it easier to collaborate with co-workers, schedule meetings and even automate repetitive tasks. Thankfully, there isn't a shortage of other options. While computers and smartphones come with a calendar, it might not be the best option for you or your business. Business owners should constantly be looking for technology to improve the productivity of their employees and their business.