Unlimited History

All of time, with a source behind every claim.

Mac

Coming soon to the App Store for Mac, iPhone, and iPad.

Put the age of the universe, geological time, civilizations, lives, and today on one continuous, zoomable axis. Every claim carries a citation, every date keeps the calendar and precision it was published with, and contested history stays contested.

One axis, every scale

• Zoom from the universe to a day — move continuously through billions of years instead of jumping between disconnected timelines.
• See what the scale allows — records resolve as you get closer, while the geological chart keeps deep time readable.
• Make the span tangible — compress history into a cosmic year, a walk, or a year-per-second journey, with the conversion shown.
• Open today — find anniversaries on this date without turning a month-precision record into a day-precision claim.

The evidence stays attached

• A source behind every claim — follow a record to the citation and the passage that supports it.
• Dates keep their meaning — calendars, ranges, approximate dates, and published uncertainty remain visible instead of collapsing into false precision.
• Disagreement remains disagreement — contested dates and interpretations are marked, with the competing positions kept side by side.
• Disaster catalogs name their rule — earthquakes, eruptions, floods, famines, outbreaks, and conflicts say why each record was included.

More than one point of view

• Choose a lens — Global, US, and European perspectives can change which records are surfaced and how a span is named, but never move a fact.
• Compare two readings — place perspectives beside one another while each keeps its own name, evidence, and date envelope.
• Follow the strands — read geological, climatic, biological, hominin, human, and institutional history separately or together.

Life inside deep time

• Read people as lifespans on the same axis as the events around them.
• Place fossil first and last appearances against the geological chart, with dating envelopes and occurrence counts intact.
• Set your birthday and see your own extent against everything else the app holds.

One purchase, every device