The other day I hit the point in my current WIP (a historical series) where I need a timeline to keep all the events straight: characters' birth dates, major events in their lives pre-Book 1, historical events relevant to the story, major events in the storylines of the books, etc.
On past projects I'd attempted to use paper and pen(cil) to draw my timeline but found that to be unwieldy. I changed my mind about when things happened, changed it back again, had a bunch of things happening in a short period of time and the writing got all cramped, the tape holding the pieces of paper together ripped, the tape prevented me from folding the timeline up into a portable size...you get the idea.
What I'd love is a home office with walls covered in whiteboard paint, but since that's not going to happen anytime soon, I decided to look into timeline app for writers. After researching several options and asking fellow writers for recommendations, I bought Aeon Timeline because: