# Cerebrux: Local AI Chat — Fast, Private, and Offline

> Offline, private AI chat with on-device models for iPhone, iPad, and Mac. (iPhone/iPad app by Duncan Crawbuck.)

- Source: https://appshunter.io/ios/app/cerebrux-local-ai-chat/id6736678221 (this page in markdown: same URL + `.md`)
- Developer: [Duncan Crawbuck](https://appshunter.io/developer/1476181426)
- Category: Productivity, Utilities
- Price: Free with in-app purchases (on sale, was $0.99)
- Rating: 3.50/5 from 6 App Store ratings · 2 written reviews indexed
- Age rating: 12+
- Requires: iOS 18.0 · 13 MB
- Languages: American English
- Released: 2024-10-27
- Data updated: 2026-08-19
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/cerebrux-local-ai-chat/id6736678221/reviews.md

## What is Cerebrux?

Features
- Familiar and easy to use design
- Chat history synced in iCloud
- Universal app: use on iPhone, iPad, and Mac

Use Local AI
- Use powerful on-device models
- Fast, secure, and completely offline
- 100% private: your data is processed locally and is not shared with anyone

Supported Local Models
- Gemma 3
- Phi 4 Mini
- DeepSeek R1 Distill
- Qwen 2.5
- Llama 3.2

## Key features

- On-device AI models
- Completely offline operation
- 100% data privacy
- iCloud chat history sync
- Universal app support (iPhone, iPad, Mac)
- Supports multiple local AI models

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Cerebrux+ | $4.99 | per month |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/cerebrux-local-ai-chat/id6736678221/reviews.md

### 1/5 — App kept Crashing

*2025-06-07*

Dowloaded it and App would keep crashing

### 4/5 — I love it but

*2025-02-28*

U should make it so that we can change the system prompt & import a new model (eg from .guf file)

**Developer response:** Thank you for your feedback! These are great suggestions.

Customizing the system prompt will be added in a future update, and will continue to look into .gguf importing (can be tricky depending on base model, want to get right).

Thanks for using Cerebrux!

## Frequently asked questions about Cerebrux

### What is Cerebrux?

Cerebrux is a productivity app that provides a private and secure AI chat experience using on-device models. It allows for fast, completely offline conversations without sharing your data.

### Does Cerebrux have ads?

No, Cerebrux does not contain advertisements. It is designed to provide an uninterrupted user experience.

### What devices does Cerebrux support?

Cerebrux is a universal app and can be used on iPhone, iPad, and Mac devices, ensuring a consistent experience across your Apple ecosystem.

### How is my data handled by Cerebrux?

Cerebrux processes all data locally on your device, ensuring 100% privacy. Your conversations are not shared with anyone, making it a highly secure option.

### What local AI models does Cerebrux support?

Cerebrux supports a variety of powerful on-device models including Gemma 3, Phi 4 Mini, DeepSeek R1 Distill, Qwen 2.5, and Llama 3.2.

### How often is Cerebrux updated?

The latest version of Cerebrux was released on March 24, 2025, with the last update on March 25, 2025, indicating frequent updates to improve functionality and support.

### What are the pricing options for Cerebrux?

Cerebrux is free to download and use. There is an optional subscription plan called Cerebrux+ available for $4.99 per month for enhanced features.

### What is the age rating for Cerebrux?

Cerebrux has an age rating of 12+, making it suitable for users aged 12 and older.

## Version history (last 5 releases)

### 2025.03.24 — 2025-03-25

Bug fixes and improvements

Thanks for using Cerebrux! Please send any questions or feedback to support@crawbuck.com

### 2025.03.14 — 2025-03-18

Added support for Gemma 3, Phi 4 Mini, Qwen 2.5, and DeepSeek R1 Distill models

Thanks for using Cerebrux! Please send any questions or feedback to support@crawbuck.com

### 2025.03.05 — 2025-03-06

Bug fixes and improvements

Thanks for using Cerebrux! Please send any questions or feedback to support@crawbuck.com

### 2025.02.26 — 2025-02-27

Bug fixes and improvements

Thanks for using Cerebrux! Please send any questions or feedback to support@crawbuck.com

### 2025.01.29 — 2025-02-07

Introducing Cerebrux+: access the smartest AI in the cloud

Thanks for using Cerebrux! Please send any questions or feedback to support@crawbuck.com

## Apps similar to Cerebrux

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [LatentChat - Assistant LLM](https://appshunter.io/ios/app/latentchat-assistant-llm/id6733216453) | 3.8 (28) | $4.99 | Productivity |
| [OThree AI - Fast Private Chat](https://appshunter.io/ios/app/othree-ai-fast-private-chat/id6740998410) | — | Free | Productivity |
| [Evai: AI Private Smart Chatbot](https://appshunter.io/ios/app/evai-ai-private-smart-chatbot/id6479216624) | 3.4 (7) | Free | Productivity |
| [morai: Local AI Memory](https://appshunter.io/ios/app/morai-local-ai-memory/id6744488702) | 5.0 (2) | Free | Productivity |
| [LocalAI - Your Local AI](https://appshunter.io/ios/app/localai-your-local-ai/id6738025000) | 3.5 (4) | Free | Productivity |
| [isagpt](https://appshunter.io/ios/app/isagpt/id6738778743) | 5.0 (1) | Free | Productivity |

## More apps by Duncan Crawbuck

- [Solitaireﾠ](https://appshunter.io/ios/app/solitaire/id1476181427)
- [Minesweeperﾠ](https://appshunter.io/ios/app/minesweeper/id1478351595)
- [Spiderﾠ Solitaire](https://appshunter.io/ios/app/spider-solitaire/id1488238124)
- [FreeCellﾠ Solitaire](https://appshunter.io/ios/app/freecell-solitaire/id1488397878)
- [Sudoku ﾠ](https://appshunter.io/ios/app/sudoku/id1526262575)

All apps by Duncan Crawbuck: https://appshunter.io/developer/1476181426

## Related topics

[duncan crawbuck](https://appshunter.io/ios/topics/duncan-crawbuck)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-19.*