# Fullmoon: Free Open Source Alternative to Grok, LM Studio, Monica

Canonical: https://caniforkit.com/fork/fullmoon
Last updated: 2026-11-07

Fullmoon (Open Source, Open Source) replaces Grok, LM Studio, Monica, Msty Studio. A mobile app for interacting with private, local large language models that work offline and are optimized for Apple silicon.

## Tool Specifications
- **Tool Name**: Fullmoon
- **Type**: Open Source Project
- **License**: Open Source
- **Official Website**: https://fullmoon.app
- **GitHub Repository**: https://github.com/mainframecomputer/fullmoon-ios
- **GitHub Stars**: ★ 2.3k
- **Runs On**: Local
- **Maintenance Status**: nov 2026
- **Platforms**: desktop, cross-platform, one-click install
- **Data Storage**: All application data lives locally on your own machine.
- **Installation**: Clone https://github.com/mainframecomputer/fullmoon-ios or deploy with Docker Compose
- **Setup Requirements**: Download the native package or installer for your operating system.
- **The Catch / Limitation**: Community-driven open source project without dedicated enterprise SLAs.

## Paid SaaS Applications Replaced (6)
Replacing these paid tools with Fullmoon saves up to $100/mo ($1,200/yr) in software subscriptions:

| Replaced Software | Category | SaaS Price | Comparison Guide |
| --- | --- | --- | --- |
| [Grok](https://caniforkit.com/grok) | [community](https://caniforkit.com/category/community) | $15/mo | [Compare Grok vs Fullmoon](https://caniforkit.com/vs/grok-vs-fullmoon) |
| [LM Studio](https://caniforkit.com/lm-studio) | [dev tools](https://caniforkit.com/category/dev-tools) | $25/mo | [Compare LM Studio vs Fullmoon](https://caniforkit.com/vs/lm-studio-vs-fullmoon) |
| [Monica](https://caniforkit.com/monica) | [community](https://caniforkit.com/category/community) | $15/mo | [Compare Monica vs Fullmoon](https://caniforkit.com/vs/monica-vs-fullmoon) |
| [Msty Studio](https://caniforkit.com/msty-studio) | [community](https://caniforkit.com/category/community) | $15/mo | [Compare Msty Studio vs Fullmoon](https://caniforkit.com/vs/msty-studio-vs-fullmoon) |
| [Poe](https://caniforkit.com/poe) | [community](https://caniforkit.com/category/community) | $15/mo | [Compare Poe vs Fullmoon](https://caniforkit.com/vs/poe-vs-fullmoon) |
| [T3.chat](https://caniforkit.com/t3-chat) | [community](https://caniforkit.com/category/community) | $15/mo | [Compare T3.chat vs Fullmoon](https://caniforkit.com/vs/t3-chat-vs-fullmoon) |

## Frequently Asked Questions

### Is Fullmoon free and open source?
Fullmoon is an open source tool licensed under Open Source that runs on local. A mobile app for interacting with private, local large language models that work offline and are optimized for Apple silicon.

### What is the trade-off or limitation of using Fullmoon?
Community-driven open source project without dedicated enterprise SLAs.

## Related

- [Self-Hosted Open Source Directory](https://caniforkit.com/self-hosted)
- [All Paid SaaS Alternatives Index](https://caniforkit.com/alternatives)
- [Software Categories Directory](https://caniforkit.com/categories)
- [Homepage](https://caniforkit.com)