Supported Features
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VoiceOver
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Voice Control
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Dark Interface
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Differentiate Without Color Alone
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Sufficient Contrast
Chapper
Local LLM & AI Chat Client
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Local AI and LLM chat on iPhone and iPad. Connect LM Studio and other OpenAI-compatible servers in a native, private app built for serious workflows. Fast.
Chapper is a powerful, privacy-first LLM and AI chat client for iPhone and iPad that connects directly to your local or self-managed AI server. No accounts, no forced cloud, no subscription.
Whether you run LM Studio, Ollama, llama.cpp, or another OpenAI-compatible endpoint, Chapper gives you a polished, fully native iOS experience for chatting with your models, managing conversations, tuning inference settings, working with memory, exporting chats, and integrating practical tools.
Built in SwiftUI from the ground up, Chapper is designed to feel like a proper iPhone and iPad app, not a web wrapper.
FEATURES
— Personas
Create and switch between custom AI personas, each with their own system prompt, tone, and language. Built-in personas include Code Expert, Translator, Teacher, Analyst, Brainstormer, and more.
— Thought Process
See how reasoning models think. Chapper surfaces the reasoning output of supported models like DeepSeek-R1, Qwen3, and other reasoning-capable models in a collapsible panel above each response.
— Rich Markdown Rendering
Responses are rendered with full Markdown support, including tables, code blocks, bold text, lists, and more.
— Model Management
Browse, inspect, select, load, and unload models directly from the app where supported. View quantisation, context length, tool-use capability, vision support, and active status at a glance.
— MCP Tools
Built-in tool integrations for practical workflows: web search, current time, server status, model listing, chat search, file and directory access, URL fetching, and export actions.
— Files App Integration
Access and manage Chapper’s workspace directly in the iOS Files app, including MCP-related folders and exported content where supported.
— Memory
Save useful long-term information and inject it into conversations automatically, so your assistant stays consistent across chats. Includes custom memory types and memory graph support.
— Scratchpad
A built-in scratchpad for temporary notes, drafts, prompts, or working context while chatting.
— Prompt Templates
Save and reuse your most-used prompts with a single tap.
— Full Parameter Control
Adjust temperature, token limits, repeat penalty, Top-K, Top-P, Min-P, TFS-Z, Flash Attention, KV-cache offload, context length, keep-alive, structured output, and more.
— Search
Full-text search across all your conversations and message content.
— Export
Export any conversation in 7 formats: TXT, PDF, HTML, Markdown, JSON, CSV, and XML.
— Keychain Support
API keys can be stored securely using the iOS Keychain.
— iCloud Sync
Optionally sync your chats across devices using iCloud.
— Analytics Dashboard
View on-device usage stats and activity insights inside the app.
— Text to Speech
Listen to responses with built-in playback controls and support for native, local, or server-based TTS configurations.
— Chat Info
Inspect detailed metadata for conversations, including timestamps, counts, tags, folder assignment, and more.
— Server Tools
Quickly configure, reuse, and manage your server connections for a smoother local AI workflow.
— Chapper Pro
One-time purchase. Unlock unlimited chat history, all export formats, advanced sampling controls, themes, and all future Pro features. No subscription.
REQUIREMENTS
Chapper is designed for locally hosted or self-managed AI backends, including LM Studio, Ollama, llama.cpp, and OpenAI-compatible servers. Some features depend on the capabilities of the connected model or server.
PRIVACY
Chapper is built with privacy in mind. Your chats stay on your device unless you explicitly enable iCloud sync or connect to your own external server. No accounts required. No third-party tracking.
Chapper is built for people who care about local AI and LLMs, model control, privacy, and a real native iOS experience.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Chapper 1.1.0 is here.
This is a major update and one of the biggest Chapper releases so far.
What’s new:
• better, redefined MCP support with integrated tool workflows
• Dedicated MCP workspace in the Files app
• Major memory upgrades, including memory graph and custom memory types
• Chat Info with detailed conversation metadata and insights
• Improved export system with cleaner export flows
• Prompt tone presets and improved system prompt controls
• Keychain support for API keys
• Expanded settings across prompts, memory, MCP, speech, personas, analytics, cloud sync, and model controls
• and many other improvements
Also included:
• Better keyboard behavior
• UI refinements across Settings
• More polished chat and smoother experience
• General fixes, performance work, and much more
The developer, Prevolut Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Prevolut Ltd
- Size
- 119.6 MB
- Category
- Productivity
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 12 more
- English, Arabic, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Chapper Pro $8.99
- Crate of Tea $24.99
- Kettle of Tea $12.99
- Barrel of Tea $44.99
- Can of Tea $6.99
- Cup of Tea $1.99
- Mini Tea $0.99
- Copyright
- © 2026 Prevolut Ltd
