Arbiter
Private AI that runs locally on your iPhone
What is Arbiter? Complete Overview
Arbiter is a revolutionary AI application that brings powerful language models directly to your iPhone, enabling private and offline AI interactions. Designed with privacy as its core principle, Arbiter processes all conversations locally without requiring internet connectivity or cloud servers. The app supports multiple open-source models like Gemma, LLaMA, and TinyLlama, allowing users to switch between them based on their needs for speed, accuracy, and memory usage. Target users include privacy-conscious individuals, professionals who need reliable offline access to AI, and anyone seeking an alternative to cloud-based AI services with recurring costs. Arbiter solves key pain points around data privacy, internet dependency, and subscription fatigue in the AI space.
Arbiter Interface & Screenshots
Arbiter Official screenshot of the tool interface
What Can Arbiter Do? Key Features
On-Device AI
Arbiter runs advanced AI models directly on your iPhone processor, requiring no internet connection or cloud servers. This enables true offline functionality while maintaining high performance through optimized models.
Privacy by Design
All conversations and data processing occur exclusively on your device. Arbiter collects no user data, requires no accounts, and maintains zero cloud logging - your information never leaves your control.
Flexible Model Management
Users can download and switch between lightweight open-source models like Gemma, LLaMA, or TinyLlama. This flexibility allows optimization for different use cases and device capabilities.
Customizable Experience
Tailor Arbiter to your workflow with adjustable model settings, download management, and preferences. The app adapts to your device's performance characteristics and your personal usage patterns.
Persistent Conversations
All chats are securely stored on-device with full user control. You can revisit previous conversations at any time without losing context, creating a continuous AI interaction experience.
No Hidden Costs
By eliminating cloud infrastructure, Arbiter avoids expensive subscription fees. Users get sustainable AI performance without recurring payments or usage-based billing.
Best Arbiter Use Cases & Applications
Private Learning Assistant
Students and lifelong learners can use Arbiter as a completely private tutor, asking detailed questions about academic subjects without any data being recorded or transmitted.
Offline Professional Tool
Business professionals working in secure environments or traveling can access AI capabilities for drafting documents, analyzing data, or brainstorming ideas without internet connectivity.
Creative Writing Partner
Writers can collaborate with Arbiter for story ideas, character development, and editing suggestions while maintaining complete ownership of their creative work.
Technical Reference
Developers and engineers can use Arbiter's code generation and technical explanation capabilities as an always-available reference tool, even in offline development environments.
How to Use Arbiter: Step-by-Step Guide
Download Arbiter from the App Store and install it on your iPhone (requires iOS 16+ and preferably A14 Bionic chip or newer for optimal performance).
Open the app and download your preferred AI model from the available open-source options (Gemma, LLaMA, TinyLlama etc.). Models vary in size and capabilities.
Adjust model settings if desired, balancing factors like response length, creativity, and processing speed based on your device capabilities.
Start conversing with Arbiter - ask questions, request explanations, or engage in creative dialogue. All processing happens locally with instant responses.
Access your conversation history anytime through the persistent chat feature, with all data remaining securely on your device.
Switch between different AI models as needed through the model management interface, without needing to reinstall the app.
Arbiter Pros and Cons: Honest Review
Pros
Considerations
Is Arbiter Worth It? FAQ & Reviews
Yes. Everything is processed and stored on your device. Your chats and files never leave your phone unless you explicitly choose to share them. We do not store, log, or sell your data.
No. Once installed, the app works entirely offline. You can use it on airplanes, in remote areas, or without Wi-Fi, while still getting fast and responsive answers.
The app uses optimized large language models (LLMs) that run locally on your device's processor. These models are pre-downloaded and don't require server access.
Currently, the app supports modern iPhones and iPads running iOS 16 or later, with best performance on devices equipped with Apple Silicon chips (A14 Bionic or newer).
You can choose from a range of open-source LLMs. The app supports switching models at any time so you can balance speed, accuracy, and device performance.