Is Kinnu free? Yes, with a few paid extras

By the edgi team Facts checked September 30, 2026

Yes, Kinnu is free: as of September 30, 2026, its General Knowledge app costs nothing to download and its pathways are free, and the App Store lists optional extras, certificates at $7.99 to $19.99 and a subscription called "Monthly" at $1.99. If you want a free app to learn something new every day, edgi is free too: a Lesson takes 60 seconds, every idea you finish becomes a card, and the cards build a Map of what you know.

We make edgi, and we built it for learning whatever you're curious about right now.

Kinnu's details are from its US App Store listing, its Google Play page and kinnu.xyz, checked September 30, 2026.

What costs money on Kinnu

Only the extras. Kinnu's homepage calls its library "a universe of free and fascinating pathways," and its App Store listing says the app "contains an optional in-app subscription." The in-app purchases it lists are three certificates ($7.99, $14.99 and $19.99) and the $1.99 Monthly item.

You can read Kinnu without the app, too. Its website publishes 899 lessons from those 100 pathways, free, under the name Kinnuverse. A Kinnu lesson is a chapter you read, one of several in a pathway. The biggest category on the site is science, with 31 pathways; history has 20 and psychology 11.

edgi: free, and you lead

edgi starts from the question you have now. A Lesson takes about a minute and ends with a question or two that make you use the idea. Finish it and the idea becomes your card, lit up on your Map next to everything it connects to. The next Lesson is whichever of those caught your attention. There's no pathway to finish, just more than 104,000 ideas joined by 296,000 connections, and 44,000 of those ideas have a Lesson.

Kinnu sells itself on remembering. Here's an edgi Lesson about which memories last:

Reminiscence bump Adults over forty recall a disproportionate number of autobiographical memories from adolescence and early adulthood.

60-second Lesson

Reminiscence bump

Ask a 70-year-old for their memories and they pile up between about 10 and 30, far more than fading predicts.

Play it here Read about reminiscence bump

On the Map, the reminiscence bump connects to autobiographical memory and to aging, and it shares a Set with nostalgia, which started out as a diagnosis for homesick soldiers. Each card turns foil, then gold, as you learn more around it. Between Lessons there's a feed of short videos from educational creators, and on iPhone edgi can lock TikTok or Instagram until you've done a Lesson.

The two apps side by side are in edgi vs Kinnu, and the other options are in Kinnu alternatives.

Pick something else only if…

• You want a set syllabus that you read in order: Kinnu.
• You want certificates for what you finish: Kinnu sells them.
• You need an Android app. edgi's Lessons play in a browser at edgi.tv/learn.

FAQ

Is Kinnu free? Yes. The General Knowledge app and its pathways are free as of September 2026. Certificates ($7.99 to $19.99) and a $1.99 "Monthly" subscription are optional purchases.

Can I use Kinnu without downloading it? You can read it. Kinnu publishes 899 lessons free on kinnu.xyz. edgi's Lessons play in a browser at edgi.tv/learn, like the one on this page.

What is Kinnu's Memory Shield? Kinnu's name for its review feature. Its App Store listing calls it "a new method to never forget what you've learned," with questions and games to "refresh and retain your knowledge."

Is Kinnu on Android? Yes, on Google Play. edgi is on iPhone and the web.

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.