# EchoRead vs 知我 AI

The clearest difference is in-app purchases: 知我 AI at none against EchoRead's 8. EchoRead's advantage is update cadence (weekly vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. EchoRead sells 8 in-app purchases, starting at $4.99 per month. 知我 AI asks for nothing beyond the download.

EchoRead ships an update weekly, 知我 AI every 2 weeks. The most recent releases landed on September 26, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | EchoRead | 知我 AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/echoread-ai-reading-notes/id6740475635/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 68 MB | 3 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wei Lai Zhi Tu Tech Inc](https://appshunter.io/developer/1688154558) | [杰栋 何](https://appshunter.io/developer/1896629335) |

## What reviewers say

### EchoRead

[App page](https://appshunter.io/ios/app/echoread-ai-reading-notes/id6740475635)

This app transforms reading highlights into visual mind maps and uses AI with the Feynman learning method to deepen understanding. It helps organize notes from various sources, connect ideas, and create personalized learning experiences like reading podcasts and summaries.

**Highlights:** Convert highlights to mind maps, AI-powered Q&A and note linking, Automatic idea connections, Feynman learning modes, Generate reading podcasts, Create structured summaries, Card notes with cross-linking

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Membership | $4.99 | per month |
| 1 Month Pro Member | $8.99 | per month |
| 3 Month Membership | $12.99 | per 3 months |
| 3 Month Pro Membership | $25.99 | per 3 months |
| 1 Year Memebership | $49.99 | per year |
| 1 year Pro Member | $89.99 | per year |
| Quota package | $2.99 | one-time |
| 100 Import Quota | $8.99 | one-time |


### 知我 AI

[App page](https://appshunter.io/ios/app/ai/id6780978880)

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

**In-app purchases:** none


## Frequently asked questions

### Is EchoRead free?

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

### Is 知我 AI free?

知我 AI is free to download, with no in-app purchases.

### Do EchoRead or 知我 AI have ads?

Neither EchoRead nor 知我 AI shows ads.

### Which is updated more often, EchoRead or 知我 AI?

EchoRead ships an update weekly, and 知我 AI every 2 weeks. Most recently, EchoRead was updated on September 26, 2026 and 知我 AI on September 22, 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.*