# Oops! AI Memory Assistant vs Second Brain

The clearest difference is update cadence: Oops! AI Memory Assistant at every 2 days against Second Brain's weekly. Oops! AI Memory Assistant also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Oops! AI Memory Assistant sells 5 in-app purchases, starting at $0.99 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.

Oops! AI Memory Assistant ships an update every 2 days, Second Brain weekly. The most recent releases landed on September 9, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Oops! AI Memory Assistant | 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 days** | Weekly |
| Monetization | — | Freemium |
| Size | 53 MB | 12 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Necati Bora Gurel](https://appshunter.io/developer/1846389609) | [Liwei Xie](https://appshunter.io/developer/1106616046) |

## What reviewers say

### Oops! AI Memory Assistant

[App page](https://appshunter.io/ios/app/oops-ai-memory-assistant/id6754039339)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter | $0.99 | per month |
| Regular | $3.99 | per month |
| Power | $6.99 | per month |
| Heavy | $12.99 | per month |
| +50 interactions | $0.99 | 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 Oops! AI Memory Assistant free?

Oops! AI Memory Assistant 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 Oops! AI Memory Assistant or Second Brain have ads?

Neither Oops! AI Memory Assistant nor Second Brain shows ads.

### Which is updated more often, Oops! AI Memory Assistant or Second Brain?

Oops! AI Memory Assistant ships an update every 2 days, and Second Brain weekly. Most recently, Oops! AI Memory Assistant was updated on September 9, 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.*