Turtle Universe vs Vid2Audio
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.
Vid2Audio
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Vid2Audio is a simple and practical tool for extracting audio tracks from local video files and saving them in common audio formats. Use it to keep the sound from lectures, meetings, interviews, clips, personal videos, and other media files. The workflow is clear: select a video, review its audio information, choose an output format and bitrate, then start extracting. Key features: - Extract audio from local video files - Supports common video files such as MP4, AVI, MOV, MKV, WebM, FLV, and WMV - Export as MP3, AAC, M4A, WAV, or FLAC - Choose 128, 192, 256, or 320 kbps for supported compressed formats - View duration, file size, audio codec, sample rate, and channel information - Track extraction progress in real time and cancel when needed - Play or share extracted audio after completion - Keep an extraction history for quick playback, sharing, or deletion - Supports English, Chinese, and system language settings - Supports light and dark mode Vid2Audio is designed around files you select locally. Please only process videos that you own, are authorized to use, or have the right to convert.
Screenshots
Verdict
The clearest difference is iOS requirement: Turtle Universe at 13.0 against Vid2Audio's 15.5. 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.
| Parameter | Turtle Universe | Vid2Audio |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (52 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 52 — better | — |
| Update frequency | Every 6 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 120 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Turtle Sim LLC | 延猛 王 |
In-app purchases
Turtle Universe
No in-app purchases
Vid2Audio
No in-app purchases









