# Turtle Universe vs fullmoon

The clearest difference is update cadence: fullmoon at every 10 days against Turtle Universe's every 6 weeks. fullmoon also leads on review sentiment (78% vs 67%). Turtle Universe's advantage is iOS requirement (13.0 vs 17.6). On price, rating, ratings volume and ads there is nothing between them.

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

Turtle Universe holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 45 and 100 respectively. Written reviews complicate that: 67% of Turtle Universe's written reviews are positive against 78% of fullmoon's, so the app with the better star average is not the one people write more warmly about.

Turtle Universe ships an update every 6 weeks, fullmoon every 10 days. The most recent releases landed on October 18, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Turtle Universe | fullmoon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (45 ratings)](https://appshunter.io/ios/app/turtle-universe/id1455235317/reviews)** | [4.4 (100 ratings)](https://appshunter.io/ios/app/fullmoon-local-intelligence/id6727014156/reviews) |
| Number of ratings | 45 | **100** |
| Positive reviews | 66.7% of reviews | **77.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Monetization | Free | Free |
| Size | 120 MB | 30 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 17+ |
| Developer | [Turtle Sim LLC](https://appshunter.io/developer/1568741108) | [Mainframe Computer, Inc.](https://appshunter.io/developer/1766722186) |

## What reviewers say

### Turtle Universe

[App page](https://appshunter.io/ios/app/turtle-universe/id1455235317)

Explore and learn about scientific phenomena through interactive microworlds. Create your own simulations using text or blocks, and engage with a global community of young learners. Discover over 100 scientific models and create computational art and games.

**Highlights:** Explore 100+ scientific models, Create custom microworlds, Code with text or blocks, Investigate phenomena, Engage in global discussions, Create computational art and games

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Turtle Universe free?

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

### Is fullmoon free?

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

### Which has better reviews, Turtle Universe or fullmoon?

Turtle Universe is rated higher. Turtle Universe averages 4.6 out of 5 from 45 ratings, while fullmoon averages 4.4 from 100 ratings.

### Do Turtle Universe or fullmoon have ads?

Neither Turtle Universe nor fullmoon shows ads.

### Which is updated more often, Turtle Universe or fullmoon?

Turtle Universe ships an update every 6 weeks, and fullmoon every 10 days. Most recently, Turtle Universe was updated on October 18, 2026 and fullmoon on October 16, 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.*