OpusWriter vs Aeon Timeline
If all you need is a timeline, Aeon Timeline is better than ours.
That is not a sentence most comparison pages open with, but it’s true. Aeon has spent a decade on one problem and it shows. The question is whether a timeline is the whole job. If you are using Aeon to plot an entire book, the rest of OpusWriter pulls ahead.
Aeon Timeline
$65 once
- Mac, Windows, and iOS on one license, on up to five devices.
- A year of updates included. After that, $35 a year for more, or keep the version you have.
- 14-day free trial.
OpusWriter
$129 once
- Windows, macOS, and Linux on one license, on up to three computers.
- Every version 1 update included. No subscription.
- 30 days free with every feature unlocked. 14-day refund after purchase.
Where Aeon Timeline is stronger
- Seven ways to view the same data: Timeline, Relationship, Spreadsheet, Subway, Narrative, List, and Mindmap, with custom tabs and split views.
- Durations, dependencies, and dates that shift together when one event moves.
- Character ages worked out at every event. Who was where, when, in a grid.
- An iPad and iPhone app, and five devices on one license.
- Bidirectional sync with Scrivener and Ulysses.
- Share a timeline with anyone through Aeon’s free read-only mode.
- Templates beyond fiction, for legal cases and project plans.
- About half the price.
Where OpusWriter is stronger
- The timeline is one planning tool among many: four outline views, 30+ Beat Sheets, Story Compass, Conflict Web, a freeform Board, and Promise Tracker.
- Purpose-built character and setting sheets with interviews, arcs, and the Flaw Engine, rather than a general system of customizable items and fields.
- Every event can link to the chapter where it happens, in the same file, with nothing to sync.
- The plan flows into Write, Edit, Publish, and Manage without leaving the app.
- Linux.
Side by side
Checked against Aeon Timeline 3.5 and OpusWriter 1.1 in September 2026. If something here is out of date, tell me and I’ll fix it.
| Feature | Aeon Timeline |
OpusWriter |
|---|---|---|
| Ways to view and organize the same data | Seven view types: Timeline, Relationship, Spreadsheet, Subway, Narrative, List, and Mindmap, with custom tabs and split views | A timeline with plot threads and drill-down sub-timelines, and a calendar timeline with real dates |
| Custom and fantasy calendars | Yes | Yes: your own months, week length, day names, and hours per day |
| Durations and dependencies | Durations, dependencies, and automatic date shifting | Durations and cause, parallel, and reference links between events. Nothing shifts automatically. |
| Automatic character ages | Ages calculated automatically at every related event | No automatic age calculation |
| Relationship matrix | Who was where, when, in one grid | None |
| Chronology versus narrative order | Chronology and narrative order are separate, and can be shown together in split views | Timeline events can link to chapters in manuscript order, but there is no side-by-side chronology and narrative view |
| Connection to the manuscript | Bidirectional structure and metadata sync with Scrivener and Ulysses; manuscript text stays in the writing app | The timeline lives in the same file as the manuscript. Nothing to sync. |
| Story structure tools | Independent narrative order across several views, Mindmap, templates, and story-arc tracking | Four outline views, 30+ Beat Sheets, Story Compass, Conflict Web, Board, Promise Tracker |
| Characters, settings, and canon | Customizable item types, fields, relationships, notes, images, links, and attachments | Character sheets, interviews, arcs, the Flaw Engine, setting profiles, canon and worldbuilding tools |
| Drafting, editing, and publishing | No manuscript drafting, prose editing, or book formatting | Write, Edit, Publish, and Manage workspaces in the same file |
| Beyond fiction | Templates for legal cases and project management | Fiction only |
| Platforms | Mac, Windows, and iOS, on up to five devices | Windows, macOS, and Linux, on up to three computers |
| Read-only sharing | Anyone with the app can browse, search, and filter a shared timeline for free | No dedicated free read-only sharing mode |
Prices in USD, from each product’s own website. Aeon Timeline is a trademark of Scribble Code. Compare all tools.
What OpusWriter’s timelines are for
OpusWriter has two. The first is a thread timeline: plot threads run as colored lines, events sit on them with a duration, and an event can open into its own sub-timeline when a single night needs an hour-by-hour view. Events connect to each other as cause, parallel, or reference, and to the chapter where they happen.
The second is a calendar timeline, on real dates or on a calendar you build for your world, with its own months, week, day names, and hours. A scene can be placed at dawn or late at night without committing to a clock time.
Neither will calculate a character’s age or shift forty dependent events when one moves. They exist to answer the questions a novelist asks while drafting: what else is happening during this chapter, how long has it been, and does the order still hold. They answer them beside the manuscript, which is the point.
When the timeline isn’t the whole job
Many writers use Aeon as their plotting app. Narrative view for structure, the mindmap for ideas, entities for the cast, and Scrivener sync to carry it into the draft. That works, and Aeon is honest about being a planning tool that hands off to a writing tool.
OpusWriter’s Plan workspace is built for that whole job. Structure has four outline views and 30+ Beat Sheets. Ideas have a freeform Board where a card can be the real chapter or the real character. The cast has full sheets, interviews, arcs, and conflict tools. Promise Tracker follows setups to their payoffs through the draft. And there is no handoff, because the outline is already the manuscript’s structure.
If a timeline is the center of how you think, keep Aeon. If it’s one tool on the bench, OpusWriter gives you the bench.
Which should you choose?
Aeon Timeline costs $65, with $35 a year for updates if you want them. OpusWriter costs $129 once. They are not really competing for the same money, and plenty of writers will own both.
Choose Aeon Timeline if
Your story lives or dies on chronology: multiple timelines, long spans, character ages, dependencies. Or you draft in Scrivener or Ulysses and want the timeline to sync with it. Or you need a timeline for work that isn’t fiction.
Choose OpusWriter if
You want the timeline beside the outline, the cast, the beat sheet, and the manuscript itself, in one file, and you would rather plot, write, edit, and publish in one place than sync between several.