# My Knowledge Base vs SecondBrain AI Assistant

The clearest difference is update cadence: SecondBrain AI Assistant at daily against My Knowledge Base's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. My Knowledge Base sells 1 one-off in-app purchase and SecondBrain AI Assistant sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

My Knowledge Base ships an update every 5 weeks, SecondBrain AI Assistant daily. The most recent releases landed on September 15, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | My Knowledge Base | SecondBrain AI Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/my-knowledge-base/id6575390471/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 22 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Wiktor Starzyk](https://appshunter.io/developer/1490335440) | [BUILD TO CONNECT LTD](https://appshunter.io/developer/6778076361) |

## What reviewers say

### My Knowledge Base

[App page](https://appshunter.io/ios/app/my-knowledge-base/id6575390471)

Capture and organize all your ideas, facts, and details effortlessly. This app acts as a personal database, allowing you to store various types of information and retrieve it quickly with a powerful search system. Customize your data input with templates for efficient management.

**Highlights:** Capture ideas and facts, Store text, photos, links, sketches, Customizable entry templates, Powerful search and query system, Organize information efficiently

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Unlimited Items | $2.99 | one-time |


### SecondBrain AI Assistant

[App page](https://appshunter.io/ios/app/secondbrain-ai-assistant/id6778076359)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Second Brain Pro Monthly | $9.99 | per month |
| Second Brain Pro Annual | $69.99 | per year |


## Frequently asked questions

### Is My Knowledge Base free?

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

### Is SecondBrain AI Assistant free?

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

### Do My Knowledge Base or SecondBrain AI Assistant have ads?

Neither My Knowledge Base nor SecondBrain AI Assistant shows ads.

### Which is updated more often, My Knowledge Base or SecondBrain AI Assistant?

My Knowledge Base ships an update every 5 weeks, and SecondBrain AI Assistant daily. Most recently, My Knowledge Base was updated on September 15, 2026 and SecondBrain AI Assistant on September 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.*