# Simplex vs Electronics Circuit Calc Pro

The clearest difference is price: Simplex at Free against Electronics Circuit Calc Pro's $3.99. Simplex also leads on iOS requirement (9.0 vs 15.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Simplex is free to download; Electronics Circuit Calc Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Simplex ships an update every 4 months, Electronics Circuit Calc Pro every 2 months. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Simplex | Electronics Circuit Calc Pro |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/electronics-circuit-calc-pro/id1583600520/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | — | Paid |
| Size | 34 MB | 31 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ACRI](https://appshunter.io/developer/1439465848) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### Simplex

[App page](https://appshunter.io/ios/app/simplex/id1439465849)

**Features:** macOS Compatibility

**In-app purchases:** none


### Electronics Circuit Calc Pro

[App page](https://appshunter.io/ios/app/electronics-circuit-calc-pro/id1583600520)

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

**Highlights:** Circuit design tools, Filter design with graph plotting, Resistor, capacitor, inductor design, Amplifier calculations, Ohm's Law calculator, 555 timer calculator, PCB trace width calculator

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

**In-app purchases:** none


## Frequently asked questions

### Is Simplex free?

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

### Is Electronics Circuit Calc Pro free?

Electronics Circuit Calc Pro costs $3.99, with no in-app purchases.

### Do Simplex or Electronics Circuit Calc Pro have ads?

Neither Simplex nor Electronics Circuit Calc Pro shows ads.

### Which is updated more often, Simplex or Electronics Circuit Calc Pro?

Simplex ships an update every 4 months, and Electronics Circuit Calc Pro every 2 months. Most recently, Simplex was updated on October 11, 2026 and Electronics Circuit Calc Pro on October 13, 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.*