I've used WriteItNow for years, the Windows version, and I love it. I've never had any problems at all. However, I tried the Storlines demo. I loved that as well. I exchanged a few e-mails with Rob, the main developer at Revenshead Services. He says WriteItNow is adding something similar that will integrate into its current timeline and character arc features. I think I will wait for that, but if it takes longer than six months, I may find myself working in both pieces of software. Incidentally, I've tried demos for Writers Blocks (similar to Storylines but has a klunky 16-bit design. I hated it. I wasn't too fond of Dramatica either. And finally, I did use New Novelist for awhile. It's not bad for the price.