# ChatAI vs Echo

The clearest difference is price: ChatAI at Free against Echo's $3.99. ChatAI also leads on update cadence (every 3 weeks vs every 6 weeks) and iOS requirement (15.6 vs 18.6). Echo's advantage is in-app purchases (none vs 3) and review sentiment (100% vs 80%). On ads and device support there is nothing between them.

ChatAI is free to download; Echo costs $3.99 up front. ChatAI sells 3 in-app purchases, starting at $3.99 per 7 days. Echo asks for nothing beyond the download.

ChatAI ships an update every 3 weeks, Echo every 6 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ChatAI | Echo |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/chatai-ai-chatbot-assistant/id6446118267/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 6 MB | 3 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [浩 刘](https://appshunter.io/developer/1433579709) | [鹏 杨](https://appshunter.io/developer/1884186063) |

## What reviewers say

### ChatAI

[App page](https://appshunter.io/ios/app/chatai-ai-chatbot-assistant/id6446118267)

Engage in thoughtful conversations, brainstorm creative ideas, or generate various forms of written content. This AI-powered chatbot offers personalized responses across a wide range of topics.

**Highlights:** AI-powered chatbot, Personalized responses, Brainstorm creative ideas, Write long-form content, Casual conversation, Understand wide range of topics

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChatAI Vip Subscrition Weekly | $3.99 | per 7 days |
| Vip Subscription Monthly | $12.99 | per month |
| ChatAI Vip Sbuscription Yearly | $29.99 | per year |


### Echo

[App page](https://appshunter.io/ios/app/echo-anniversary/id6760383873)

This app helps you track important dates like anniversaries and manage daily notes. It offers local reminders, diary entries with moods, and a "On This Day" feature to revisit past memories. The minimalist design keeps everything private and on your device.

**Highlights:** Anniversary and countdown tracking, Local reminders, Diary entries with moods, On This Day flashbacks, Privacy-first local storage, PDF export of diary

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

**In-app purchases:** none


## Frequently asked questions

### Is ChatAI free?

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

### Is Echo free?

Echo costs $3.99, with no in-app purchases.

### Do ChatAI or Echo have ads?

Neither ChatAI nor Echo shows ads.

### Which is updated more often, ChatAI or Echo?

ChatAI ships an update every 3 weeks, and Echo every 6 weeks. Most recently, ChatAI was updated on November 3, 2026 and Echo on November 5, 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.*