# Kern: Remember What You Read — Spaced repetition flashcards

> Spaced repetition flashcards for retaining book knowledge. (iPhone/iPad app by Quantum IT.)

- Source: https://appshunter.io/ios/app/kern-remember-what-you-read/id6777347570 (this page in markdown: same URL + `.md`)
- Developer: [Quantum IT](https://appshunter.io/developer/1650178784)
- Category: Education, Books
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 22 MB
- Languages: American English
- Released: 2026-07-10
- Data updated: 2026-08-23
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/kern-remember-what-you-read/id6777347570/reviews.md

## What is Kern?

You spent ten hours reading a book. A month later, the sharpest ideas are fuzzy, characters blur, and the moments that moved you are already slipping away.

Kern keeps the books you finish alive. Add a title and it becomes a deck of sharp, swipeable cards.

For non-fiction, Kern brings back the key ideas, examples, arguments, and surprising connections.

For fiction, Kern revisits the characters, relationships, turning points, themes, motifs, and settings that made the story stay with you.

Then spaced repetition takes over, resurfacing cards as the book begins to fade.

HOW IT WORKS

1. Add a book you've finished. Just the title - no uploads, highlights, or homework.

2. Kern creates a deck designed to bring that specific book back to mind.

3. Swipe for a few minutes a day. Cards from across your library interleave, while neglected books gradually return to the surface.

FICTION AND NON-FICTION

Fiction and non-fiction receive different kinds of cards because remembering a novel is not the same as remembering a business book.

Fiction cards contain full-book spoilers and are intended for books you've already finished.

WHY READERS PICK KERN

- Cards for both fiction and non-fiction
- Your whole library in one interleaved feed
- Interactive cards that check what actually stuck
- Original, paraphrased cards, not excerpts and not a substitute for reading
- Review anywhere, fully offline after a deck is created
- No account and no sign-up

THE WALL

Every book you add lives on the Wall.

Review it and it stays inked. Neglect it and you can watch it fade. Fiction and non-fiction are clearly marked, and mixed libraries can open a feed for either type.

No streaks, guilt trips, or leaderboards. Just an honest picture of what is still in your head.

PRICING

Your first two books are free, with no payment required.

Continue with Kern Plus for unlimited books, or unlock an individual book with a one-time purchase.

Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel them in your App Store account settings.

Terms of Use: https://kern.cards/terms
Privacy Policy: https://kern.cards/privacy

Read on.

## Key features

- Spaced repetition flashcards
- Supports fiction and non-fiction
- Offline review capability
- Interactive cards
- No account required
- Book fading visualization

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Kern Plus (Annual) | $49.99 | per year |
| Kern Plus (Monthly) | $5.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock One Book | $3.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/kern-remember-what-you-read/id6777347570/reviews.md

### 5/5 — Lovely and useful

*2026-08-13*

I’ve never seen an app quite like this. Great summaries and interaction design.

### 5/5 — GREAT APP

*2026-07-28*

AMAZING

## Frequently asked questions about Kern

### How does Kern help me remember books?

Kern creates interactive flashcards from the books you add, using spaced repetition to resurface information as you begin to forget it. This method is designed to strengthen your memory of key ideas, characters, and plot points.

### Can I use Kern for both fiction and non-fiction books?

Yes, Kern generates different types of cards tailored for fiction and non-fiction. Fiction cards focus on characters and plot, while non-fiction cards highlight key ideas and arguments.

### Is Kern free to use?

Kern offers your first two books for free without any payment required. You can then choose to unlock individual books with a one-time purchase or subscribe to Kern Plus for unlimited book access.

### What are the subscription options for Kern Plus?

Kern Plus offers both monthly and annual subscription plans. The monthly plan is $5.99 per month, and the annual plan is $49.99 per year, providing unlimited access to all features.

### Can I review my flashcards offline with Kern?

Yes, once a deck is created for a book, you can review your flashcards anywhere, fully offline. This allows for flexible learning and review sessions without needing an internet connection.

### Does Kern have ads?

No, Kern does not contain advertisements. The app is designed to provide an uninterrupted learning experience, focusing on your retention of book content.

### How do I cancel my Kern Plus subscription?

You can manage or cancel your Kern Plus subscription at any time through your App Store account settings. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current billing period.

### What age rating does Kern have?

Kern has an age rating of 4+. This indicates that the content and design are suitable for users aged four and above.

## Version history (last 4 releases)

### 1.3 — 2026-08-14

Kern can now tell you when a book starts to fade.

Until now Kern knew the day a book began slipping out of reach, and had no way to mention it. Turn on reminders and one quiet notification arrives in the evening when a book actually crosses out of INKED, which is the moment a review is worth the most.

Books fading on the same day arrive as a single notification, never one per book. No streaks, no daily nagging, and nothing fires simply because you have been away. Every reminder matches a real book crossing a real threshold.

If your whole shelf goes cold, Kern says so once, then stays quiet until you come back.

Reminders stay off until you turn them on, and you can switch them off again in Settings.

### 1.2 — 2026-07-21

Kern now remembers fiction, too.

Add novels and revisit their characters, relationships, turning points, themes, motifs, settings, and foreshadowing, not just a plot summary.

The Wall now clearly marks fiction and non-fiction books. Once your library contains both, you can open a feed dedicated to either type.

We also simplified the card-generation screen and refined the Wall’s Saved and All Cards controls.

### 1.1 — 2026-07-13

What's new in 1.1

Take a book off your shelf. Press and hold any book on the Wall to remove it, cards and all.

Built for every reader. Kern now fully supports VoiceOver, scales with your Dynamic Type text size, and respects Reduce Motion.

Manage your subscription anytime. A new link in Settings opens your subscription so you can review or change it whenever you like.

A clearer start. Search now makes it plain that Kern works best with non-fiction.

Read. Keep. Repeat.

### 1.0 — 2026-07-10

No release notes.

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All apps by Quantum IT: https://appshunter.io/developer/1650178784

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*