# OpAmplifiers vs Electronics Tools & Calculator

The clearest difference is rating: OpAmplifiers at 5.0 against Electronics Tools & Calculator's 4.0. OpAmplifiers also leads on ads (none vs shown) and iOS requirement (6.0 vs 15.0). Electronics Tools & Calculator's advantage is ratings volume (16 vs 1). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OpAmplifiers holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Electronics Tools & Calculator has 16 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on September 23, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | OpAmplifiers | Electronics Tools & Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/opamplifiers/id700960348/reviews)** | [4.0 (16 ratings)](https://appshunter.io/ios/app/electronics-tools-and-calculator/id1581885136/reviews) |
| Number of ratings | 1 | **16** |
| Positive reviews | — | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | Free | Free |
| Size | 3 MB | 63 MB |
| Requires iOS | **6.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kyrill Cousson](https://appshunter.io/developer/478650872) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### OpAmplifiers

[App page](https://appshunter.io/ios/app/opamplifiers/id700960348)

This app aids electronics students by providing information on operational amplifier applications, including schematics, formulas, and component calculations. It offers a simple interface to revise key concepts and check amplifier pinouts.

**Highlights:** Operational amplifier application revision, Schematics and input value display, Formula lookup, Component value calculation, Amplifier pinout checking, Supports multiple op-amp circuit types

**Features:** macOS Compatibility

**In-app purchases:** none


### Electronics Tools & Calculator

[App page](https://appshunter.io/ios/app/electronics-tools-and-calculator/id1581885136)

This app serves as a pocket-sized electronics lab, offering a comprehensive reference for components and circuits. It simplifies complex calculations for filters, inductors, and various circuit configurations, aiding both engineers and hobbyists in their design processes.

**Highlights:** Electronic component reference, Electronic circuit reference, Filter design calculators, Inductor winding calculators, Transformer winding calculators, Resistor and capacitor calculations, Ohm's law and power calculations

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

**In-app purchases:** none


## Frequently asked questions

### Is OpAmplifiers free?

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

### Is Electronics Tools & Calculator free?

Electronics Tools & Calculator is free to download, with no in-app purchases.

### Which has better reviews, OpAmplifiers or Electronics Tools & Calculator?

OpAmplifiers is rated higher. OpAmplifiers averages 5.0 out of 5 from 1 ratings, while Electronics Tools & Calculator averages 4.0 from 16 ratings.

### Do OpAmplifiers or Electronics Tools & Calculator have ads?

Electronics Tools & Calculator shows ads; OpAmplifiers does not.

### Which is updated more often, OpAmplifiers or Electronics Tools & Calculator?

OpAmplifiers ships an update every 6 weeks, and Electronics Tools & Calculator every 6 weeks. Most recently, OpAmplifiers was updated on September 23, 2026 and Electronics Tools & Calculator on September 27, 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.*