fullmoon vs Rey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
fullmoon
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.
- Private LLM chat
- Fully offline operation
- On-device model execution
- Cross-platform Apple support
- Customizable themes and fonts
- Shortcut integration
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the simplest way to use private LLMs: works fully offline and private when you don’t have internet. runs models on-device optimized for Apple silicon. works on every platform: iOS, iPadOS, macOS, visionOS personalize: adjust the theme, fonts, and system prompt in the app. Shortcut: chat with fullmoon or get an output from a local model to use with other actions. free, open source, private.
Rey
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The official mobile companion app for viewing and testing mobile apps built with Rey, a platform for building mobile apps visually. Test your mobile apps instantly on your phone as you build them on the web. See your designs come to life on your device in real-time. Instant Preview: Design on the web and see changes appear immediately on your phone. Iterate faster by testing interactions, layouts, and user flows on actual iOS devices. Real Device Testing: Experience your app exactly as your users will, with native performance, accurate touch responses, and true-to-life screen dimensions. If you have any questions, please reach out to us at hello@reyapp.io. Links Privacy Policy: https://reyapp.io/privacy Terms of Service: https://reyapp.io/terms
Screenshots
Verdict
The clearest difference is update cadence: fullmoon at every 10 days against Rey's every 3 weeks. Rey's advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, Rey every 3 weeks. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.
| Parameter | fullmoon | Rey |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (100 ratings) — better | — |
| Positive reviews | 77.8% of reviews | — |
| Number of ratings | 100 — better | — |
| Update frequency | Every 10 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 30 MB | 40 MB |
| Age rating | 17+ | 4+ |
| Developer | Mainframe Computer, Inc. | Lofi GmbH |
Bugs and requests
fullmoon
Reported bugs
2 issues- Incompatibility with iPhone SE2 and iPad Pro Gen3 despite supporting Metal 3
- Deepseek models not working on some devices
Requested features
6 requests- 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
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- Implement voice mode and customizable AI models
Rey
Not enough reviews yet to summarise bugs or requests.
In-app purchases
fullmoon
No in-app purchases
Rey
No in-app purchases
