- Siri Shortcuts — Siri Shortcuts are offered for creating new documents from the built-in templates.
- Outline View — On iOS 12, rows grow in height while typing if the text wraps to another line.
OmniOutliner 5.3.4 improves compatibility with pre-release versions of macOS Mojave.
OmniOutliner 3.2 adds localized Reference Manuals for German, Spanish, French, Japanese, Dutch, Italian, Russian, Chinese (Simplified), Portuguese (Brazil), and Korean.
OmniOutliner 5.3.3 is a minor update addressing a crash when opening documents on pre-release builds of macOS Mojave.