# MyMemo vs Second Brain

The clearest difference is monetization model: Second Brain at freemium against MyMemo's subscription. Second Brain also leads on review sentiment (100% vs 67%). MyMemo's advantage is ratings volume (150 vs 2) and device support (3 vs 1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. MyMemo sells 4 in-app purchases, starting at $5.90 per month and Second Brain sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for MyMemo against 4.5 for Second Brain. That said, the two scores are not equally well evidenced: MyMemo has 150 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 67% of MyMemo's written reviews are positive against 100% of Second Brain's.

MyMemo ships an update weekly, Second Brain every 9 days. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | MyMemo | Second Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (150 ratings)](https://appshunter.io/ios/app/mymemo-ai-second-brain/id6475923922/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/second-brain-know-yourself/id6760254340/reviews) |
| Number of ratings | **150** | 2 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Subscription | **Freemium** |
| Size | 47 MB | 12 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [MyMemo AI](https://appshunter.io/developer/1745873794) | [Liwei Xie](https://appshunter.io/developer/1106616046) |

## What reviewers say

### MyMemo

[App page](https://appshunter.io/ios/app/mymemo-ai-second-brain/id6475923922)

This AI-powered tool helps you manage and organize your personal knowledge by collecting digital content from various online sources. It uses AI to extract insights, answer your questions, and provide AI-driven recaps to stimulate learning and understanding.

**Highlights:** Collects digital content from internet sources, AI-driven content analysis and insight extraction, Answers user queries about collected knowledge, AI-generated recaps for reflective learning, Natural language chat for information retrieval, Organized and secure knowledge database

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription for Pro | $5.90 | per month |
| Monthly Subscription for Ultra | $11.90 | per month |
| Annual Subscription for Pro | $44.99 | per year |
| Annual Subscription for Ultra | $118.99 | per year |


### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-know-yourself/id6760254340)

This AI-powered journal captures your thoughts via voice or text, automatically organizing and connecting them. It helps you recall memories, discover patterns, and reflect on your growth.

**Highlights:** AI classification, tagging, and summarization, Semantic search by meaning, Three-layer memory system, People cards for relationship tracking, Weekly AI reflections, Voice input with transcription, Data export (JSON + Markdown)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Second Brain Pro | $4.99 | per month |
| Second Brain Pro | $39.99 | per year |


## Frequently asked questions

### Is MyMemo free?

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

### Is Second Brain free?

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

### Which has better reviews, MyMemo or Second Brain?

MyMemo is rated higher. MyMemo averages 4.6 out of 5 from 150 ratings, while Second Brain averages 4.5 from 2 ratings.

### Do MyMemo or Second Brain have ads?

Neither MyMemo nor Second Brain shows ads.

### Which is updated more often, MyMemo or Second Brain?

MyMemo ships an update weekly, and Second Brain every 9 days. Most recently, MyMemo was updated on October 15, 2026 and Second Brain on October 10, 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.*