HistoryLayer for iPhone and iPad

The same atlas, as a native app for iPhone and iPad: the world’s borders from 123,000 BCE to 2026, with the events, people and wars of each period pinned in place.

For iPhone and iPad

The app on iPhone at 1914 CE: the map of Europe with the First World War's theatres washed over it and events pinned on it, the era chips and the year ruler below. — The map, at 1914

The app on iPhone with the Battle of the Somme open: its date, era, place and a photograph, over the map of 1916. — An event, where it happened

The app on iPhone with Leonardo da Vinci open: 1452 to 1519, his roles and a portrait, with the fine year bar set around his life. — A life, and the years around it

What it does

Move through time: The ruler steps through the maps the atlas holds, and a finer year bar opens for reading a single war or a single life. Ask for a year the atlas has no map for and it shows the nearest one and says so.
Open what is on the map: Tap a region, an event or a person to read it: the date, the place, the story and the pictures. A war’s theatres are drawn over the land for the years it ran.
Find one thing: Search across events, people, wars and places.
Keep and share: Star a record to keep it. A shared link opens the same record on this website, so it works for somebody without the app.
One account: Sign in and your saves and notes are the same on the app and on the website.
iPad: On the larger screen the eras run down the side and a record opens beside the map rather than over it.

The app on iPad: the era list on the left, the map of Europe in 1916 in the middle, and the Battle of the Somme open in a column on the right. — On iPad, the record sits beside the map

For iPhone and iPad

Help with the app is on the support page. What it stores is on the privacy page.