# fullmoon vs Mass Compass

The clearest difference is update cadence: Mass Compass at every 3 days against fullmoon's every 10 days. fullmoon's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

fullmoon ships an update every 10 days, Mass Compass every 3 days. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | fullmoon | Mass Compass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (100 ratings)](https://appshunter.io/ios/app/fullmoon-local-intelligence/id6727014156/reviews)** | — |
| Number of ratings | **100** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 3 days** |
| Monetization | Free | — |
| Size | 30 MB | 25 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Mainframe Computer, Inc.](https://appshunter.io/developer/1766722186) | [Raven Vector](https://appshunter.io/developer/1896521088) |

## What reviewers say

### fullmoon

[App page](https://appshunter.io/ios/app/fullmoon-local-intelligence/id6727014156)

This app provides a private and offline way to interact with local large language models. It runs models directly on your device, optimized for Apple silicon, and is available across multiple Apple platforms. Personalize your experience and integrate with other apps via Shortcuts.

**Highlights:** Private LLM chat, Fully offline operation, On-device model execution, Cross-platform Apple support, Customizable themes and fonts, Shortcut integration

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast and efficient
- 🔒 Offline usage
- 👍 Clean and polished interface
- 👍 Works on older devices
- 👍 Friendly for less tech-savvy users

**What reviewers complain about**

- 🐛 Compatibility issues
- 🐛 Downloading/installing models can be slow
- 🐛 Responses can be inaccurate or incomplete
- 🐛 App crashes when using certain features

**Reported bugs**

- Incompatibility with iPhone SE2 and iPad Pro Gen3 despite supporting Metal 3
- Deepseek models not working on some devices

**Requested features**

- Add support for saving/copying full chat conversations
- Expand functionality through Shortcuts integration
- Provide more advanced language models
- Allow users to remove/delete downloaded models
- Add support for attaching files and images


### Mass Compass

[App page](https://appshunter.io/ios/app/mass-compass/id6775085616)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is fullmoon free?

fullmoon is free to download, with no in-app purchases.

### Is Mass Compass free?

Mass Compass is free to download, with no in-app purchases.

### Do fullmoon or Mass Compass have ads?

Neither fullmoon nor Mass Compass shows ads.

### Which is updated more often, fullmoon or Mass Compass?

fullmoon ships an update every 10 days, and Mass Compass every 3 days. Most recently, fullmoon was updated on October 7, 2026 and Mass Compass on October 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*