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Fullmoon — run local LLM chats directly on Apple devices

OSS scale score 166.6OSS health 22Update pace 0 commits/30d
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OSS scale score is an unbounded metric that log-compresses and weights Stars, Watchers, Forks, and Contributors. Discovery score is the current OSS scale score minus the score at discovery. Update pace is commits in the last 30 days, growth momentum is the OSS scale score difference within the recent observation window, and OSS health is a 0–100 rating based on available recency, Community Health, and release data.

Stars
2,266
Primary language
Swift
License
MIT
Repository last updated
May 5, 2025

Overview

Fullmoon is a local AI chat app for iPhone, iPad, and Mac built on MLX Swift, running LLM inference on Apple silicon and keeping chat history on-device.

Features and best fit

Based on official documentation; not hands-on tested · Content checked:

Run small LLMs locally on Apple silicon

Fullmoon uses MLX Swift to execute supported language models on iPhone, iPad, and Mac hardware.

Sources: [2]

Keep chat history on the device

Conversation history is stored locally instead of requiring a cloud service for persistence.

Sources: [2]

For experimenting with private or offline local AI on Apple devices

It fits users who value local inference and privacy more than access to the largest hosted models.

Sources: [2]

Verify maintenance and model support after the May 2025 repository activity

The repository is not archived, but its latest push is from May 2025. Check releases and issues for current OS, device, and model compatibility.

Sources: [1][2]

Official sources

  1. [1]mainframecomputer/fullmoon-ios repository(2026-09-20)
  2. [2]Fullmoon README(2026-09-20)
  3. [3]Fullmoon website(2026-09-20)
  4. [4]Fullmoon MIT license(2026-09-20)
Supplemental curator note

Fullmoon keeps inference and chat history local on Apple devices, avoiding a mandatory cloud AI service. The latest repository push is from May 2025 and the README's listed models are relatively small, so verify current iOS/macOS compatibility, model support, and releases before adopting it in 2026.

Try it in 3 steps

  1. 1

    Get the source

    git clone --depth 1 https://github.com/mainframecomputer/fullmoon-ios.git
  2. 2

    Enter the repository

    cd fullmoon-ios
  3. 3

    Check the official steps

    Continue with the commands in the README Installation, Quick Start, or Getting Started section.

    find . -maxdepth 1 -iname 'README*' -exec sed -n '1,220p' {} \; -quit
Check the official README

Growth

Growth trends · Last 30 days

2,266 Stars

Trend data is still being collected.

Development activity

Last 90 days · weekly

Commits (last 30 days)
0
Open PRs
7

Development activity is still being collected.

Built with

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GitHub data

GitHub dataView detailed GitHub data
View on GitHub
Stars
2,266
Forks
220
Watchers
18
Open issues
39
Contributors
6
Primary language
Swift
License
MIT
Repository last updated
May 5, 2025
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