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Home/Categories/AI & Machine Learning/Fullmoon
icon of fullmoon

Fullmoon

Open source alternative to Private LLM and Lekh AI Pro

Chat with private and local large language models on Apple devices, fully offline, optimized for Apple silicon.

2.3K stars
image of fullmoon
Contents
  1. 01Who Fullmoon is for

Repository

Stars
2.3K
Forks
223
License
MIT
Latest
1.2.3
Last commit
400 days ago
Last verified
May 13, 2026
Repo
mainframecomputer/fullmoon-ios ↗
Swift
MIT
Visit websiteGitHub repo
  • 02The problem it solves
  • 03How it solves it
  • 04Strengths and trade-offs
  • 05Tech stack
  • 06FAQ
  • 07Similar open-source tools
    • TL;DR

    Fullmoon is an Apple-device app for chatting with local and private large language models offline. It replaces hosted AI chat apps for users who want model conversations on their own device without sending prompts to a cloud provider. MIT licensed repository.MIT · Swift · 2.3K stars

    who it's for

    Who Fullmoon is for#

    Apple users keeping prompts private

    Use Fullmoon to chat with local models about personal notes, drafts, or sensitive ideas without sending prompts to a hosted AI provider.

    Skip if:

    You need the strongest hosted frontier model for complex reasoning.

    Offline AI assistance

    Use Fullmoon when AI chat needs to keep working without reliable internet access.

    Skip if:

    Your workflow depends on live web search, cloud tools, or team-shared chat history.

    the problem

    The problem it solves#

    how Fullmoon solves it

    How it solves it#

    Offline local model chat

    Fullmoon is positioned around chatting with local LLMs on Apple devices, allowing prompts to stay off hosted AI services.

    Apple silicon optimization

    The product targets Apple hardware, which matters for local inference performance and battery-sensitive personal workflows.

    Private personal assistant workflow

    Fullmoon fits users who want AI help for notes, drafts, questions, and brainstorming without a cloud account in the middle.

    strengths · trade-offs

    Strengths and trade-offs#

    Strengths

    • Prompt privacy by defaultLocal model conversations reduce exposure of sensitive prompts compared with hosted AI chat products.
    • Good fit for offline useAn offline local model app can keep working where network access is limited or where users intentionally avoid cloud processing.

    Trade-offs

    • -Local models have limitsOn-device models may be smaller or less capable than the largest hosted models. Users should choose based on privacy needs and expected answer quality.
    tech stack · detected from GitHub

    What it's built on#

    Languages
    Swift
    frequently asked

    FAQ#

    Does Fullmoon work offline?

    Fullmoon is positioned around local and offline LLM chat on Apple devices.

    Is Fullmoon a ChatGPT alternative?

    Fullmoon can replace hosted AI chat for private local conversations. ChatGPT remains stronger when users need hosted frontier models, web-connected features, or team administration.

    Who should use Fullmoon?
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    Additional details

    Language
    Swift
    Open issues
    45
    Contributors
    6
    First release
    2024

    Categories

    AI & Machine LearningLLMOps & AI Tooling

    Tags

    LLMSelf HostedPersonal AssistantPrompt EngineeringAI AgentsAI Search Tools

    Hosted AI chat tools are convenient, but prompts can include private work, personal notes, code, health questions, or customer context. Sending that text to a third-party model provider is not always acceptable.

    Local LLM apps give users more control, but they need to fit mobile and Apple-device workflows. If setup is too technical, private AI stays out of reach for the people who need it.

    Fullmoon is best for Apple users who value local prompt privacy and offline AI chat over maximum hosted model capability.