# Know It vs Flashcard King

The clearest difference is update cadence: Flashcard King at every 2 days against Know It's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Know It sells 2 in-app purchases, starting at $3.99 per month and Flashcard King sells 2 in-app purchases, starting at $5.00 per month. Whichever you choose, the download price is not the number that matters.

Know It ships an update every 2 months, Flashcard King every 2 days. The most recent releases landed on October 28, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Know It | Flashcard King |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 50 MB | 41 MB |
| Requires iOS | 15.1 | **15.0.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [NOLAN OLIVIER DANIEL ESSERTAIZE](https://appshunter.io/developer/1876489727) | [Erick Scarponeti Marreiro](https://appshunter.io/developer/6809907731) |

## What reviewers say

### Know It

[App page](https://appshunter.io/ios/app/know-it-feynman/id6759038082)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Abonnement étudiant | $3.99 | per month |
| Abonnement Illimité | $12.99 | per month |


### Flashcard King

[App page](https://appshunter.io/ios/app/flashcard-king/id6816529452)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flashcard King Premium Monthly | $5.00 | per month |
| Flashcard King Premium Yearly | $24.00 | per year |


## Frequently asked questions

### Is Know It free?

Know It is free to download, with in-app purchases available.

### Is Flashcard King free?

Flashcard King is free to download, with in-app purchases available.

### Do Know It or Flashcard King have ads?

Neither Know It nor Flashcard King shows ads.

### Which is updated more often, Know It or Flashcard King?

Know It ships an update every 2 months, and Flashcard King every 2 days. Most recently, Know It was updated on October 28, 2026 and Flashcard King on October 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*