I've been using the Week Calendar app on my phone for several years. It's not flashy and does lack some of the seamless integration with other applications - weather, social media, etc. - that some people genuinely use. But, it was inexpensive ($2) and does everything I need it to do. I like that I can assign a different color to various people/situations, so I can very easily see who has to be where and when.
You'll find that many of the truths we cling to depend greatly upon our own point of view. - Obi Wan Kenobi