# SecondBrain Pro vs Second Brain

The clearest difference is update cadence: Second Brain at weekly against SecondBrain Pro's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. SecondBrain Pro sells 2 one-off in-app purchases 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.

SecondBrain Pro ships an update every 2 months, Second Brain weekly. The most recent releases landed on September 17, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | SecondBrain Pro | Second Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/second-brain-know-yourself/id6760254340/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Freemium |
| Size | 10 MB | 12 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Heinrich Krupp](https://appshunter.io/developer/1866842398) | [Liwei Xie](https://appshunter.io/developer/1106616046) |

## What reviewers say

### SecondBrain Pro

[App page](https://appshunter.io/ios/app/secondbrain-pro/id6757423935)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard | $7.99 | one-time |
| SecondBrain PREMIUM | $17.99 | one-time |


### 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 SecondBrain Pro free?

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

### Is Second Brain free?

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

### Do SecondBrain Pro or Second Brain have ads?

Neither SecondBrain Pro nor Second Brain shows ads.

### Which is updated more often, SecondBrain Pro or Second Brain?

SecondBrain Pro ships an update every 2 months, and Second Brain weekly. Most recently, SecondBrain Pro was updated on September 17, 2026 and Second Brain on September 8, 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.*