# DS0 vs Knowledge Snack

The clearest difference is in-app purchases: DS0 at none against Knowledge Snack's 1. Knowledge Snack's advantage is update cadence (every 9 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Knowledge Snack sells 1 in-app purchase, starting at $19.99 per year. DS0 asks for nothing beyond the download.

DS0 ships an update every 3 months, Knowledge Snack every 9 days. The most recent releases landed on October 25, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | DS0 | 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 27 MB | 54 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Davy Raitt](https://appshunter.io/developer/1795318281) | [Giftphoria](https://appshunter.io/developer/1873456095) |

## What reviewers say

### DS0

[App page](https://appshunter.io/ios/app/ds0-001-datasys-plus-exam-prep/id6761265808)

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

**In-app purchases:** none


### 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 DS0 free?

DS0 is free to download, with no in-app purchases.

### Is Knowledge Snack free?

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

### Do DS0 or Knowledge Snack have ads?

Neither DS0 nor Knowledge Snack shows ads.

### Which is updated more often, DS0 or Knowledge Snack?

DS0 ships an update every 3 months, and Knowledge Snack every 9 days. Most recently, DS0 was updated on October 25, 2026 and Knowledge Snack 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.*