# My Topics vs GreyMatter

The clearest difference is in-app purchases: My Topics at none against GreyMatter's 2. GreyMatter's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. GreyMatter sells 2 in-app purchases, starting at $7.99 per month. My Topics asks for nothing beyond the download.

My Topics ships an update fortnightly, GreyMatter every 8 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | My Topics | GreyMatter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/greymatter/id6777464593/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 8 days** |
| Monetization | — | Freemium |
| Size | 4 MB | 69 MB |
| Requires iOS | **16.1** | 16.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Francis X Flaherty Jr](https://appshunter.io/developer/541403746) | [Moksha Labs LLC](https://appshunter.io/developer/6777464595) |

## What reviewers say

### My Topics

[App page](https://appshunter.io/ios/app/my-topics/id6448582104)

**Features:** macOS Compatibility

**In-app purchases:** none


### GreyMatter

[App page](https://appshunter.io/ios/app/greymatter/id6777464593)

Master AI with daily personalized briefings on news and research. Structured learning tracks guide you from fundamentals to advanced concepts with adaptive lessons and quizzes. Invest just ten minutes daily to truly understand and excel in artificial intelligence.

**Highlights:** Personalized AI news briefings, AI research updates, Structured learning tracks, Adaptive lessons and quizzes, Fundamentals to advanced concepts, Daily 10-minute learning

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $7.99 | per month |
| Pro Annual | $71.90 | per year |


## Frequently asked questions

### Is My Topics free?

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

### Is GreyMatter free?

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

### Do My Topics or GreyMatter have ads?

My Topics shows ads; GreyMatter does not.

### Which is updated more often, My Topics or GreyMatter?

My Topics ships an update fortnightly, and GreyMatter every 8 days. Most recently, My Topics was updated on October 25, 2026 and GreyMatter on October 25, 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.*