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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+1
What's New in Chapper
1.3.1
August 6, 2026
What's New in 1.3.1 Dear Chappers, this update fixes a lot of bugs and logic errors, and brings some new features to improve the Chapper experience. • Dozens of small fixes and inconsistencies resolved under the hood • Fixed an issue where template icons wouldn't apply correctly • Fixed MCP server settings occasionally opening the wrong menu • Smoother, more reliable app flow throughout chat and local model use • First look at Agent Mode, letting Chapper handle multi-step tasks with checkpoints along the way • Quick model switching • Bigger AI answer field for easier reading • Smaller UI tweaks and little features added throughout • Updated animations for a smoother feel • General polish • And much more We've received so much positive and constructive feedback from all of you, and we are grateful. Thank you for being part of the Chapper journey. More updates are on the way.
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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.