I have both! I have this wonderful planner I bought on Amazon and will continue buying, because it’s awesome:
I use Google calendar a lot too, and note-taking apps like Evernote.
I need multiple ones. I’m sure a lot of you are the same. One reminder is not enough. Two is not enough. Three is a minimum.
I write A LOT because ADHD, so I need a fat planner, and just unlimited space on electronic planners and calendars.
I also need a lot of different colored gel pens. They must be gel pens. They must be at least 10 different colors. And I use highlighters. I find using many colors works for me, because they’re pretty, otherwise I will just not read what I write, or not read carefully enough. Black and blue ink aren’t attention-getting enough for me.