# MyMemo vs RetroNoise

The clearest difference is update cadence: RetroNoise at every 3 days against MyMemo's weekly. MyMemo's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. MyMemo sells 4 in-app purchases, starting at $5.90 per month and RetroNoise sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

MyMemo ships an update weekly, RetroNoise every 3 days. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | MyMemo | RetroNoise |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (150 ratings)](https://appshunter.io/ios/app/mymemo-ai-second-brain/id6475923922/reviews)** | — |
| Number of ratings | **150** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Subscription | — |
| Size | 47 MB | 20 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [MyMemo AI](https://appshunter.io/developer/1745873794) | [非凡 常](https://appshunter.io/developer/1495411611) |

## 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 |


### RetroNoise

[App page](https://appshunter.io/ios/app/retronoise/id6746529238)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription Monthly | $0.99 | per month |
| Premium Subscription Yearly | $7.99 | per year |


## Frequently asked questions

### Is MyMemo free?

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

### Is RetroNoise free?

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

### Do MyMemo or RetroNoise have ads?

Neither MyMemo nor RetroNoise shows ads.

### Which is updated more often, MyMemo or RetroNoise?

MyMemo ships an update weekly, and RetroNoise every 3 days. Most recently, MyMemo was updated on October 15, 2026 and RetroNoise on October 4, 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.*