# Know It vs FlashGenius

The clearest difference is ads: Know It at none against FlashGenius's shown. Know It also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, 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 FlashGenius sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Know It ships an update every 2 months, FlashGenius monthly. The most recent releases landed on September 30, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Know It | FlashGenius |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Size | 50 MB | 31 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [NOLAN OLIVIER DANIEL ESSERTAIZE](https://appshunter.io/developer/1876489727) | [Tabish Hassan](https://appshunter.io/developer/1885918100) |

## 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 |


### FlashGenius

[App page](https://appshunter.io/ios/app/flashgenius-smart-flashcards/id6762045443)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FlashGenius Premium | $2.99 | per month |


## Frequently asked questions

### Is Know It free?

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

### Is FlashGenius free?

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

### Do Know It or FlashGenius have ads?

FlashGenius shows ads; Know It does not.

### Which is updated more often, Know It or FlashGenius?

Know It ships an update every 2 months, and FlashGenius monthly. Most recently, Know It was updated on September 30, 2026 and FlashGenius on October 13, 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.*