# Electronics Circuit Calc Pro vs Operational Amplifiers Guide

The clearest difference is price: Operational Amplifiers Guide at Free against Electronics Circuit Calc Pro's $4.99. Electronics Circuit Calc Pro's advantage is ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

Operational Amplifiers Guide is free to download; Electronics Circuit Calc Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 27, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Electronics Circuit Calc Pro | Operational Amplifiers Guide |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| 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** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | — |
| Size | 31 MB | 17 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Anas Abubakar](https://appshunter.io/developer/1581534101) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### 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


### Operational Amplifiers Guide

[App page](https://appshunter.io/ios/app/operational-amplifiers-guide/id6467499897)

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

**In-app purchases:** none


## Frequently asked questions

### Is Electronics Circuit Calc Pro free?

Electronics Circuit Calc Pro costs $4.99, with no in-app purchases.

### Is Operational Amplifiers Guide free?

Operational Amplifiers Guide is free to download, with no in-app purchases.

### Do Electronics Circuit Calc Pro or Operational Amplifiers Guide have ads?

Operational Amplifiers Guide shows ads; Electronics Circuit Calc Pro does not.

### Which is updated more often, Electronics Circuit Calc Pro or Operational Amplifiers Guide?

Electronics Circuit Calc Pro ships an update every 2 months, and Operational Amplifiers Guide every 2 months. Most recently, Electronics Circuit Calc Pro was updated on September 27, 2026 and Operational Amplifiers Guide on September 19, 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.*