Introduction
Modern technology has changed many things from our everyday use. Books, writing, music are all this today has a very different view than 15-20 years ago. This fate touches personal diaries. Of course, people can also keep a diary in a variety of notebooks, but the smartphone can be a much more convenient tool for this task. Heyday is the diary application for iPhones. Someone can say that these programs have already appeared abound, but Heyday has something to surprise.
Consider, for example, a popular DayOne. DayOne allows sharing its notes, attaching thereto locations, tags. But looking at all of its capabilities globally, ...
