good app, minor bugs
Needs more updates considering it is a paid app to use the feature. System prompt feature sends what it wants to rather than what you tell it to. So that’s broken in that regard.
Free
In-App Purchases
About
This app provides a privacy-focused AI chat experience on your iPhone and iPad. It connects to local LLMs and self-hosted AI servers, offering features like custom personas, rich markdown rendering, and a sandboxed terminal for local workflows. Enjoy full control over inference settings and secure storage of API keys.
✓On-device local models
✓Custom AI personas
✓Rich Markdown rendering
✓Model management
✓MCP Tools integration
✓Sandboxed terminal environment
✓Export conversations in multiple formats
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What's New in Chapper
1.3.0
May 20, 2026
Chapper 1.3.0 is a major update focused on local AI, better tool use, and a smoother everyday chat experience. New in this release: • On-device local models for private AI directly on iPhone and iPad • Live Activities for ongoing chats and local generation • Support for Apple Foundation Models where available • MLX local model support with improved loading, generation, and model management • Better local vision model handling • Improved LM Studio and MCP tool workflows • New Brave Search option for web search • More reliable MCP tool execution for files, web search, URLs, time, memory, shell actions, and server tools • Improved C.A.S.H. filesystem behavior and clearer tool activity reporting • Updated Pro and local model purchase flows • UI refinements across Settings, model management, chat, and tool activity views • More robust iCloud sync behavior • Improved chat composer behavior and cursor stability • Fixes for user-reported MCP, local model, StoreKit, and UI issues • General reliability, compatibility, and polish improvements across Chapper Chapper 1.3.0 makes local AI, MCP tools, and everyday chat workflows more powerful, private, and reliable.
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In-App Purchases
$9.99
Chapper Pro
Unlimited usage, advanced control, customization & more
User reviews
FAQ
What is Chapper?
Chapper is a privacy-first AI chat client for iPhone and iPad that allows you to run on-device models and connect to local LLMs, LM Studio, self-hosted AI servers, and OpenAI-compatible endpoints without requiring accounts or cloud services.
Does Chapper have ads?
No, Chapper does not contain advertisements. It is a free application designed for a seamless user experience without interruptions.
What platforms does Chapper support?
Chapper is available for iPhone and iPad, offering a native iOS experience built with SwiftUI.
How often is Chapper updated?
The latest version of Chapper is 1.3.0, released on May 20, 2026. Updates are provided to enhance functionality and reliability.
Can I use Chapper offline?
Yes, Chapper supports on-device local models, allowing you to run supported AI models directly on your iPhone and iPad for private local inference, even without an internet connection.
What kind of personas can I create in Chapper?
You can create and switch between custom AI personas with unique system prompts and tones. Built-in personas include Code Expert, Translator, Teacher, Analyst, and Brainstormer, among others.
What export formats does Chapper support?
Chapper allows you to export conversations in multiple formats, including TXT, PDF, HTML, Markdown, JSON, CSV, and XML, facilitating easy sharing and integration with other tools.
How does Chapper handle API keys?
Chapper uses iOS Keychain for secure storage of API keys, ensuring your sensitive information is protected.