# Pre vs Knowledge Snack

The clearest difference is update cadence: Knowledge Snack at every 9 days against Pre's every 31 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Pre sells 1 in-app purchase, starting at $4.99 per month and Knowledge Snack sells 1 in-app purchase, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

Pre ships an update every 31 months, Knowledge Snack every 9 days. The most recent releases landed on November 8, 2026 and November 15, 2026 respectively.

## The numbers

| Metric | Pre | Knowledge Snack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/knowledge-snack/id6761691421/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 296 MB | 54 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Math Galaxy](https://appshunter.io/developer/500490521) | [Giftphoria](https://appshunter.io/developer/1873456095) |

## What reviewers say

### Pre

[App page](https://appshunter.io/ios/app/pre-algebra-fundamentals/id551027794)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PreAlgebra - Math Galaxy | $4.99 | per month |


### Knowledge Snack

[App page](https://appshunter.io/ios/app/knowledge-snack/id6761691421)

Discover a new interesting fact daily in just two minutes. Enjoy audio narration for learning on the go and save your favorite facts for later reference. Customize notification frequency to suit your learning schedule.

**Highlights:** Daily new facts, Audio narration, Save favorite facts, Customizable notifications, Short learning sessions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Premium | $19.99 | per year |


## Frequently asked questions

### Is Pre free?

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

### Is Knowledge Snack free?

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

### Do Pre or Knowledge Snack have ads?

Neither Pre nor Knowledge Snack shows ads.

### Which is updated more often, Pre or Knowledge Snack?

Pre ships an update every 31 months, and Knowledge Snack every 9 days. Most recently, Pre was updated on November 8, 2026 and Knowledge Snack on November 15, 2026.

---

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