# Turtle Universe — Think like a Scientist

> Interactive scientific modeling and simulation platform for learning and creation. (iPhone/iPad app by Turtle Sim LLC.)

- Source: https://appshunter.io/ios/app/turtle-universe/id1455235317 (this page in markdown: same URL + `.md`)
- Developer: [Turtle Sim LLC](https://appshunter.io/developer/1568741108)
- Category: Utilities, Education
- Price: Free
- Rating: 4.56/5 from 45 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 120 MB
- Languages: English
- Released: 2021-05-21
- Data updated: 2026-07-29
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/turtle-universe/id1455235317/reviews.md

## What is Turtle Universe?

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.

## Key features

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

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/turtle-universe/id1455235317/reviews.md

### 5/5 — Doesn’t work

*2026-06-06, version 1.4.1*

After making an account i can’t pick a username because when I click continue or whatever button it is called it says login. Something I don’t remember Edit: I just had to sign in with google I’m sorry

### 1/5 — A

*2024-06-21, version 1.3.3*

Aa

### 5/5 — great app!

*2023-05-06, version 1.2.6*

I don’t know what to say anymore

## Frequently asked questions about Turtle Universe

### What is Turtle Universe?

Turtle Universe is a free app that allows users to explore and create scientific simulations. It is inspired by NetLogo and supports many of its models, making complex scientific concepts accessible.

### What kind of scientific models can I explore in Turtle Universe?

You can explore over 100 scientific models covering diverse fields, including traffic jams, predator-prey interactions, and plant growth. New models are frequently added.

### Can I create my own simulations in Turtle Universe?

Yes, you can unleash your creativity by coding your own microworlds using either text-based coding or block-based programming. This allows for personalized learning and experimentation.

### Is Turtle Universe suitable for all ages?

Turtle Universe is rated for ages 4 and up, making it suitable for young learners and educators. Its intuitive interface and engaging content cater to a broad audience.

### Does Turtle Universe have ads?

No, Turtle Universe is completely free and does not contain any advertisements. Users can enjoy an uninterrupted learning and creation experience.

### What devices does Turtle Universe support?

Turtle Universe is available on iPhone, iPad, and iPod devices, allowing users to access its features across various Apple mobile platforms.

### How often is Turtle Universe updated?

The app was last updated on May 28, 2025, indicating ongoing maintenance and potential for new features or model additions. The current version is 1.4.1.

### How does Turtle Universe compare to NetLogo?

Turtle Universe brings the power of NetLogo's multi-agent programmable modeling environment to mobile devices. It supports most NetLogo, NetLogo Web, and NetTango models, offering a familiar yet portable experience.

## Version history (last 5 releases)

### 1.4.1 — 2025-05-28

Using Augmented Reality (AR) to play with turtles around you!
1) Fixed reported interface issues.
2) Improved a few translation texts.
3) Fixed issues around import and export.
If you have any questions, please contact civitas@u.northwestern.edu

### 1.4.0 — 2024-09-06

Using Augmented Reality (AR) to play with turtles around you!
1) Updated execution engine, compatible with NetLogo 6.4.
2) Added a dedicated NetLogo color picker in the code editor.
3) One-click connection to the NetLogo online community is now available.
4) Fixed many reported issues around the audio and crashes.
If you have any questions, please contact turtlesim@u.northwestern.edu

### 1.3.3 — 2024-02-01

Using Augmented Reality (AR) to play with turtles around you!
1) Updated code editor and execution engine.
2) The Bitmap extension can now be used for turtle shapes.
3) One-click connection to the NetLogo online community is now available.
4) Fixed many reported issues.
If you have any questions, please contact turtlesim@u.northwestern.edu

### 1.3.1 — 2023-07-27

Using Augmented Reality (AR) to play with turtles around you!
1) Further improved the code editor experience.
2) Fixed many reported issues.
If you have any questions, please contact turtlesim@u.northwestern.edu

### 1.3.0 — 2023-06-04

Using Augmented Reality (AR) to play with turtles around you!
1) Remade command center and improved code editor.
2) Support for sharing scan results between different iOS AR devices.
3) Improved performance of all simulations.
4) Fixed the issue of potential turtle rendering order disorder.
5) Fixed the issue that might cause stuttering at startup.
6) Fixed the issue that might prevent quitting when saving.
7) Fixed the issue that might cause AR mode to crash.
8) No new dialogue boxes will appear for a short time after closing the code popup window.
9) Fixed the issue with Markdown format support.
10) Now you can use Bitmap extension to set the shape of turtles.
If you have any questions, please contact turtlesim@u.northwestern.edu

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## More apps by Turtle Sim LLC

- [Physics Lab AR](https://appshunter.io/ios/app/physics-lab-ar/id1298984261)

All apps by Turtle Sim LLC: https://appshunter.io/developer/1568741108

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-29.*