# Turtle Universe vs Electronic Circuit Calculator

The clearest difference is review sentiment: Turtle Universe at 67% against Electronic Circuit Calculator's 11%. Turtle Universe also leads on rating (4.6 vs 4.0) and in-app purchases (none vs 1). On price, update cadence, monetization model and device support there is nothing between them.

Both are free to download. Electronic Circuit Calculator sells 1 one-off in-app purchase. Turtle Universe asks for nothing beyond the download.

Turtle Universe holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Turtle Universe has 52 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 67% of Turtle Universe's written reviews are positive against 11% of Electronic Circuit Calculator's.

Turtle Universe ships an update every 6 weeks, Electronic Circuit Calculator every 2 months. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Turtle Universe | Electronic Circuit Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (52 ratings)](https://appshunter.io/ios/app/turtle-universe/id1455235317/reviews)** | [4.0 (5 ratings)](https://appshunter.io/ios/app/electronic-circuit-calculator/id1583972990/reviews) |
| Number of ratings | **52** | 5 |
| Positive reviews | **66.7% of reviews** | 11.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 120 MB | 37 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Turtle Sim LLC](https://appshunter.io/developer/1568741108) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## 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


### Electronic Circuit Calculator

[App page](https://appshunter.io/ios/app/electronic-circuit-calculator/id1583972990)

This app provides a comprehensive suite of calculators and design tools for electronic engineering. It assists with circuit design, filter analysis, and component calculations for resistors, capacitors, and inductors. Ideal for both professionals and students, it simplifies complex electronic projects.

**Highlights:** Comprehensive calculator collection, Filter design with graph plotting, Resistor, transistor, capacitor design tools, Amplifier and inductor design, Circuit analysis and design, Offline functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to the Pro version | $3.99 | one-time |


## Frequently asked questions

### Is Turtle Universe free?

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

### Is Electronic Circuit Calculator free?

Electronic Circuit Calculator is free to download, with in-app purchases available.

### Which has better reviews, Turtle Universe or Electronic Circuit Calculator?

Turtle Universe is rated higher. Turtle Universe averages 4.6 out of 5 from 52 ratings, while Electronic Circuit Calculator averages 4.0 from 5 ratings.

### Do Turtle Universe or Electronic Circuit Calculator have ads?

Electronic Circuit Calculator shows ads; Turtle Universe does not.

### Which is updated more often, Turtle Universe or Electronic Circuit Calculator?

Turtle Universe ships an update every 6 weeks, and Electronic Circuit Calculator every 2 months. Most recently, Turtle Universe was updated on November 2, 2026 and Electronic Circuit Calculator on November 6, 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.*