Use it on your terms.
Leave AI off and add facts yourself. Writing, timelines, graphs, snapshots, queries, and source tracing all work without a model.
Chronal StudioComing soonLocal-first desktop app
Your story.
Every change,
connected.
A local workspace for the worlds you write and the histories you research. Keep your notes, changing facts, and sources connected across timelines and graphs.
- 01Write prose
- 02Review proposals
- 03Accept changes
- 04Explore the graph
Greyhaven Demo · Optional local AI workflow · 19 seconds
Write normally.
Add structure deliberately.
A character changes sides. A witness learns something new. A city elects a mayor. Keep the history of those changes without rewriting yesterday’s notes.
- 01
Start with the writing
Keep notes, scenes, records, and research in ordinary Markdown files inside a local folder.
- 02
Choose what to track
Add dated facts, knowledge, and events yourself. If you enable local AI, you can also review its suggestions. Either way, you decide what becomes part of the record.
- 03
Follow the changes
See what was true at a chosen time, who knew it, and what changed it. Trace the answer to its supporting record.
Write once.
Explore every angle.
The same facts connect your writing, timelines, graphs, and investigations. Follow a person, event, or moment between views without rebuilding your project.
Enlarge view ↗What happened, and in what order?
Arrange events across tracks, see where they overlap, and keep the chronology connected to your notes.
Explore timelines and snapshots
Enlarge view ↗What was different before and after?
Look at your project at a chosen date, then compare snapshots to see which facts and relationships changed.
Understand snapshot comparison
Enlarge view ↗Why is this the answer?
Trace a fact to its supporting record, see when it applied, and inspect the earlier information it replaced.
See the investigation workflowOptional local AI
Your words stay yours.
Always optional. Always private. Always reviewable.
Never writing for you. Chronal’s built-in AI can propose facts from what you have already written. Your voice, your ideas, and what becomes true in your project remain yours to decide.
It runs on your computer.
Download a model to your device. After setup, fact suggestions run locally, including offline. Your prose is not sent to an AI provider.
You have the final say.
Inspect the source and each proposed change. Edit, accept, or dismiss it. A suggestion only joins the tracked record when you accept it.
You write
“In 1825, John Baldwin became mayor of Greyhaven.”
Your original sentence stays as you wrote it.
Local AI proposesAwaiting your review
- Person
- John Baldwin
- Fact
- Mayor of Greyhaven
- From
- 1825
A possible fact to track, with the source sentence attached. You decide whether it belongs.
Illustrative proposal, not a generated passage. AI can misread a sentence; review is part of the workflow.
How local AI worksConnecting an outside agent is a separate choice. Its provider may process content in the cloud. Read about agent access.
Built for work where yesterday’s answer still matters.
Chronal makes change explorable whether you are maintaining a fictional world, reconstructing events, or keeping years of connected notes coherent.
A project you can keep.
Your writing and its history live together in an ordinary folder. Open the files, back them up, or bring them into your own workflow.
Inside a Chronal projectYour files remain the foundation.
Projects are ordinary local folders with readable notes and small data files for the structure you approve.
Your history remains intact.
A new fact can supersede an earlier one without erasing it. Return to a past moment and understand the project as it was then.
Every answer keeps its trail.
See the source, the applicable time, and the earlier information a newer fact replaced.
Know what was true. Trace why.
Follow the Greyhaven workflow from ordinary writing to a time-aware answer with its source still attached.