The best app to learn random facts (and actually understand them)

By the edgi team Updated October 28, 2026

The best app to learn random facts is edgi. It's free, each 60-second Lesson takes one strange fact and shows you why it's true, and every idea you finish becomes a card on a Map of what you know, so the facts stick together instead of scrolling past. Facts by Monkey Taps gives you a fact to read, and the Wikipedia app an article; edgi explains the fact and keeps it for you as a card.

We make edgi, and we built it to be the most fun way to collect things worth knowing.

From each app's US App Store listing, checked September 30, 2026. Platforms are the ones we confirmed.

Why edgi beats a fact of the day

A fact app hands you a sentence. "Doctors once treated nostalgia as a disease" is a good one, and you'll have forgotten it by lunch, because there's nothing to hang it on. An edgi Lesson gives you the fact, then the reason it's true, then a question that makes you use it. That takes about a minute, and you come away knowing the thing.

Here's that one. Play it on this page:

Nostalgia Nostalgia is a bittersweet emotional longing for past events, people, or places that cannot be recovered.

60-second Lesson

Nostalgia

Nostalgia began as a diagnosis for homesick Swiss soldiers. It turns out to be a mood that loneliness sets off, and it leaves you feeling less alone.

Play it here Read about nostalgia

Then the fact becomes a card, and the card lands on your Map. Nostalgia sits next to saudade, the Portuguese word for longing, and next to the reminiscence bump, the reason a 70-year-old's memories pile up between about 10 and 30. One random fact leads to the next one you didn't know you wanted. Your cards turn foil, then gold, as you learn more around them, and a streak counts your days.

Random is what edgi's Map does best. It has more than 104,000 ideas joined by 296,000 connections, and 36% of those connections cross from one field to another. Dinosaurs lead to black holes in four steps. When you want a break from choosing, there's a feed of short videos from educational creators, and 37 Sets string ideas into short runs.

The other apps for random facts

Facts by Monkey Taps is the classic fact-a-day app: "thousands of facts" in categories from animals to riddles. It's free with ads. Premium removes them and lets you save and search facts; the App Store lists it from $4.99 a month to $99.99 for a lifetime plan. edgi is free and goes one step past the fact: why it's true, then a question that makes you use it.

The Wikipedia app is free with no ads, and its home screen widgets show trending articles or a Picture of the Day. It's the place to read the whole story once something grabs you. edgi is where it grabs you: the fact in a 60-second Lesson, then the Map shows the next idea it connects to.

Kinnu's App Store listing has a category called "Absolutely Random," with pathways from dinosaurs to secret societies. Its lessons are written chapters, and the app is free. Kinnu's public lessons run a median of about 1,500 words, six minutes of reading; an edgi Lesson takes 60 seconds, which is the right size for a random fact.

For more apps that reward wandering, see the best apps for curious people.

Pick something else only if…

• You want short facts to read and nothing more: Facts.
• You want to read a long article about the fact: the Wikipedia app.
• You need an Android app. edgi's Lessons play in a browser at edgi.tv/learn.

FAQ

What is the best app to learn random facts? edgi. It's free, a Lesson takes 60 seconds and explains why a fact is true, and every idea you learn becomes a card on a Map of what you know.

Is there a free app for random facts with no ads? edgi is free, and so is the Wikipedia app, which has no ads. Facts by Monkey Taps is free with ads; its Premium removes them.

How do I remember random facts? Understand why they're true and connect them to something you know. That's what an edgi Lesson does in about a minute, and the card it leaves on your Map shows what the fact connects to.

Is edgi free? Yes. Lessons, cards and the Map are free, and Sets unlock with coins you earn by learning, not money. An optional Pro subscription adds extras like offline access.