Time is where worldbuilding quietly falls apart. A character is forty in one chapter and twenty-eight in a flashback that should be later. A war ends before the battle that ended it. The fix is not more discipline. It is a calendar the tool actually understands.
A calendar you invent
WorldFrame lets you build the calendar your world runs on, not a relabeled version of ours.
A timeline that fits the story
Events become points on a world timeline you can read three ways: in story order, by date, or as parallel swim-lanes for separate threads. Multi-day events are blocks you can drag to reschedule, and everything stays tied to the records the events belong to. The timeline is part of the bible, not a separate chart you maintain by hand.
The time-lens: see the world at any moment
This is the part a flat timeline cannot do. Drag the time-lens and the whole world reflects that moment. Characters appear and disappear as they are born and lost. Alliances form and break. Borders move on the map, and the relationship graph redraws to match. The story was always moving through time. The time-lens lets you stand at any point and look around.
Yours, and offline
The calendar, the timeline, and the events live with the rest of your world as plain files on your own machine. No subscription, no cloud, no account. Set the rules once and the whole studio keeps time for you.
Common questions
Can I invent my own calendar?
Yes. You define months, week lengths, eras, leap rules, and holidays. Dates then use your calendar everywhere, so ages and the order of events stay correct on a world that is not Earth.
What is the time-lens?
A slider that moves your whole world to any moment in its history. Drag it and the graph, timeline, and map reflect that point: who is alive, which alliances hold, where the borders sit.
Does it calculate character ages?
Yes. Because events are dated on your calendar, WorldFrame shows a character's age at a given event, so you never do the arithmetic by hand.
Can I view the timeline different ways?
Yes. View it by story order, by date, or as parallel swim-lanes, and drag multi-day events to reschedule them. It lives in plain files on your disk.
Keep time on your own terms.
Invent the calendar, then watch the world move through it.