# Chemistry Widget vs Knowledge Snack

The clearest difference is price: Knowledge Snack at Free against Chemistry Widget's $0.99. Knowledge Snack also leads on update cadence (every 9 days vs every 3 weeks) and iOS requirement (15.1 vs 18.4). Chemistry Widget's advantage is in-app purchases (none vs 1). On rating, ratings volume, ads and device support there is nothing between them.

Knowledge Snack is free to download; Chemistry Widget costs $0.99 up front. Knowledge Snack sells 1 in-app purchase, starting at $19.99 per year. Chemistry Widget asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Chemistry Widget against 5.0 for Knowledge Snack. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Chemistry Widget ships an update every 3 weeks, Knowledge Snack every 9 days. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Chemistry Widget | Knowledge Snack |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/chemistry-widget/id6746058742/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/knowledge-snack/id6761691421/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Paid | **Freemium** |
| Size | 5 MB | 54 MB |
| Requires iOS | 18.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Cecile Lebleu](https://appshunter.io/developer/1701666740) | [Giftphoria](https://appshunter.io/developer/1873456095) |

## What reviewers say

### Chemistry Widget

[App page](https://appshunter.io/ios/app/chemistry-widget/id6746058742)

Explore detailed profiles of every element on the periodic table, including their origins, uses, and scientific properties. This app offers interactive Home Screen widgets to discover new elements daily, making science accessible for students and enthusiasts.

**Highlights:** Detailed element profiles, Origins and etymology, Main uses and facts, Home Screen widgets, Filter by properties (radioactive, toxic), Filter by group block

**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 Chemistry Widget free?

Chemistry Widget costs $0.99, with no in-app purchases.

### Is Knowledge Snack free?

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

### Which has better reviews, Chemistry Widget or Knowledge Snack?

Chemistry Widget and Knowledge Snack are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Chemistry Widget or Knowledge Snack have ads?

Neither Chemistry Widget nor Knowledge Snack shows ads.

### Which is updated more often, Chemistry Widget or Knowledge Snack?

Chemistry Widget ships an update every 3 weeks, and Knowledge Snack every 9 days. Most recently, Chemistry Widget was updated on October 7, 2026 and Knowledge Snack on September 28, 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.*