Turtle Universe vs fullmoon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Turtle Universe
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.
- Explore 100+ scientific models
- Create custom microworlds
- Code with text or blocks
- Investigate phenomena
- Engage in global discussions
- Create computational art and games
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Dive into the mesmerizing world of Turtle Universe, where you can explore and learn about various social and scientific phenomena through captivating microworlds. Unleash your creativity by coding your own microworlds with text or blocks, and join lively discussions with young learners across the globe! 1) Discover over 100 intriguing scientific models from diverse fields – with even more on the way! 2) Investigate phenomena such as traffic jams, predator-prey interactions, and the blooming of flowers. 3) Immerse yourself in enthralling storylines within the microworlds. 4) Create and play with stunning computational art and addictive games just for fun! Inspired by NetLogo, the leading multi-agent programmable modeling environment, Turtle Universe brings the limitless power of computational modeling to smartphones and tablets of young students and educators like you! Experience genuine scientific modeling shared by countless researchers and students worldwide. Turtle Universe supports most NetLogo, NetLogo Web, and NetTango models right from the start. From the creators of Physics Lab, a physics experiment simulation app loved by over 3 million learners and teachers. =========================== Term of Use: https://static.turtlesim.com/products/Term-Of-Use.txt Privacy Policy: https://static.turtlesim.com/products/Privacy-Policy.txt =========================== Copyright 2021 John Chen & Uri Wilensky. All rights reserved. Turtle Universe is authored by John Chen & Uri Wilensky and maintained by CCL at Northwestern University. If you mention the software in a publication, please include the citation below: * Chen, J. & Wilensky, U. (2021). Turtle Universe. Center for Connected Learning and Computer-Based Modeling, Northwestern University, Evanston, IL.
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.
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Verdict
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.
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.
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.
| Parameter | Turtle Universe | fullmoon |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (45 ratings) — better | 4.4 (100 ratings) |
| Positive reviews | 66.7% of reviews | 77.8% of reviews — better |
| Number of ratings | 45 | 100 — better |
| Update frequency | Every 6 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Vision Pro — better |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 120 MB | 30 MB |
| Age rating | 4+ | 17+ |
| Developer | Turtle Sim LLC | Mainframe Computer, Inc. |
Customer experience
Turtle Universe
fullmoon
Bugs and requests
Turtle Universe
Not enough reviews yet to summarise bugs or 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
In-app purchases
Turtle Universe
No in-app purchases
fullmoon
No in-app purchases
Questions
Is Turtle Universe free?
Is fullmoon free?
Which has better reviews, Turtle Universe or fullmoon?
Do Turtle Universe or fullmoon have ads?
Which is updated more often, Turtle Universe or fullmoon?
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