# ChatEngine vs AI Chat Assistant

The clearest difference is review sentiment: ChatEngine at 100% against AI Chat Assistant's 61%. ChatEngine also leads on rating (4.7 vs 4.3). AI Chat Assistant's advantage is update cadence (weekly vs every 3 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. ChatEngine sells 11 in-app purchases, starting at $7.99 per 7 days and AI Chat Assistant sells 12 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ChatEngine holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 163 and 342 respectively. Written reviews point the same way: 100% of ChatEngine's written reviews are positive against 61% of AI Chat Assistant's.

ChatEngine ships an update every 3 weeks, AI Chat Assistant weekly. The most recent releases landed on September 26, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | ChatEngine | AI Chat Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (163 ratings)](https://appshunter.io/ios/app/chatengine-ai-image-generator/id6754240438/reviews)** | [4.3 (342 ratings)](https://appshunter.io/ios/app/ai-chat-assistant-chatboost/id6758393788/reviews) |
| Number of ratings | 163 | **342** |
| Positive reviews | **100.0% of reviews** | 60.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Freemium | Freemium |
| Size | 61 MB | 131 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AIONIX](https://appshunter.io/developer/1896514633) | [One Eighty Ltd.](https://appshunter.io/developer/1872680366) |

## What reviewers say

### ChatEngine

[App page](https://appshunter.io/ios/app/chatengine-ai-image-generator/id6754240438)

This AI assistant leverages advanced models like GPT-5 and Gemini to help with writing, image generation, document summarization, and problem-solving. It offers a suite of tools for creative tasks, productivity boosts, and academic assistance.

**Highlights:** AI text generation, AI image generation, Document summarization and rewriting, Image-to-text conversion (OCR), AI homework helper, Resume and cover letter builder

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChatHub 1 Week Pro | $7.99 | per 7 days |
| ChatHub AI Plus-Weekly | $7.99 | per 7 days |
| ChatEngine 1 Week Pro | $9.99 | per 7 days |
| ChatHub AI Plus-Weekly | $9.99 | per 7 days |
| ChatHub 1 Week Pro | $19.99 | per 7 days |
| ChatHub AI Plus-Yearly | $39.99 | per year |
| ChatHub AI Plus-Yearly | $59.99 | per year |
| ChatEngine AI Plus-Yearly | $99.99 | per year |
| chatengine_60_credits | $4.99 | one-time |
| chatengine_200_credits | $14.99 | one-time |
| chatengine_500_credits | $29.99 | one-time |


### AI Chat Assistant

[App page](https://appshunter.io/ios/app/ai-chat-assistant-chatboost/id6758393788)

This app offers a versatile AI assistant powered by multiple leading models, capable of answering questions, generating images, solving math problems via camera, and assisting with writing tasks. It also features voice interaction, file analysis, and specialized AI assistants for various needs.

**Highlights:** Multiple AI models (ChatGPT, Claude, Gemini, Grok, DeepSeek), AI image generation from text or photos, Camera-based math problem solver, AI-powered web search and summarization, Voice chat mode, File upload and analysis (PDF, DOC, XLS), 50+ specialized AI assistants

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chatplus Premium Access Weekly | $7.99 | per 7 days |
| Chatplus Premium Weekly | $7.99 | per 7 days |
| AI Chatbot Weekly Access- Chatplus | $8.99 | per 7 days |
| Chatplus Premium Weekly Trial | $9.99 | per 7 days |
| Chatplus Premium Monthly | $14.99 | per month |
| Chatplus Plus (1 Year Image) | $49.99 | per year |
| AI Chatbot Yearly Access- Chatplus | $69.99 | per year |
| Chatplus Premium Yearly | $69.99 | per year |
| Chatplus Premium Yearly | $89.99 | per year |
| premium | $6.99 | one-time |
| premium | $11.99 | one-time |
| Chatplus 10000 Credits | $29.99 | one-time |


## Frequently asked questions

### Is ChatEngine free?

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

### Is AI Chat Assistant free?

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

### Which has better reviews, ChatEngine or AI Chat Assistant?

ChatEngine is rated higher. ChatEngine averages 4.7 out of 5 from 163 ratings, while AI Chat Assistant averages 4.3 from 342 ratings.

### Do ChatEngine or AI Chat Assistant have ads?

Neither ChatEngine nor AI Chat Assistant shows ads.

### Which is updated more often, ChatEngine or AI Chat Assistant?

ChatEngine ships an update every 3 weeks, and AI Chat Assistant weekly. Most recently, ChatEngine was updated on September 26, 2026 and AI Chat Assistant on September 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*