I have been a consistent and heavy user of OmniOutliner on the Mac for over 10 years, and I have been using this iPad version for around 8 months. The developers have completely duplicated the experience of the desktop app here on the iPad. It runs great, syncs reliably, and all of the functions I look for are there, in the places I expect to find them. I would prefer if the app could sync with iCloud Drive instead of Omnis own sync server, but this is not a big gripe and overall I am very happy with the app. I get a lot of use out of it and it does everything I expected.
Josh1222 about OmniOutliner 2