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e1000 Apps

1000 Ideas from History, One Subject at a Time

Meeting a new term sparks curiosity, and curiosity is where learning begins. e1000 Apps is a series of apps, each bringing together 1000 carefully selected ideas from the history of one field.

Pick a subject you're curious about and start with one a day.

Apps by subject

Eras, fields and people
Browse the ideas by era and by field. The stories of the people behind them are included too.
Connected, so you remember longer
Knowledge sticks better in context. Each item is linked to earlier and later related knowledge, and you can follow that flow as arrows on a world map. Because we picked the most influential ideas, they naturally lead you to deeper study.
One at a time, in spare moments
Just one a day adds up to 365 in a year. Start easy with 5 new "Today's knowledge" picks every day.

Included in every app

  • Reminders

    one idea at the days and times you choose

  • Review cards

    add what you want to remember, and see it again just before you forget

  • Study history

    viewed knowledge, people and reviews are logged by date automatically

  • Search, read aloud, share as an image

  • Sync your history between iPhone and iPad with iCloud

  • Restore your history on a new device with Google backup

  • All content works without an internet connection

  • 17 languages

    not a simple translation — the content was researched anew for each language. Switch the language in the app to see the same knowledge in another language

  • Dark mode

No adsNo in-app purchasesNo sign-upNo data collection

Each app is a one-time purchase that unlocks all its content.

Frequently Asked Questions

Are e1000 apps free?
No. Each subject is a separate paid app that you buy once.
Are there ads, in-app purchases or subscriptions?
No. One purchase unlocks all content of that app, with no ads, in-app purchases or subscriptions.

Once you are curious, look for deeper resources and study in earnest.

We hope this app is your first step.