# OpAmplifiers vs Circuit

The clearest difference is rating: OpAmplifiers at 5.0 against Circuit's 1.0. OpAmplifiers also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, update cadence and in-app purchases 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 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

OpAmplifiers ships an update every 6 weeks, Circuit every 5 weeks. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | OpAmplifiers | Circuit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/opamplifiers/id700960348/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/circuit-design/id1618728154/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 3 MB | 35 MB |
| Requires iOS | **6.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kyrill Cousson](https://appshunter.io/developer/478650872) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## 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


### Circuit

[App page](https://appshunter.io/ios/app/circuit-design/id1618728154)

Design, analyze, and solve electrical circuits with this comprehensive tool. It supports various circuit types, simplifies complex networks step-by-step, and includes educational resources on electrical laws and formulas. Save and share your designs locally.

**Highlights:** Design and analyze electrical circuits, Simplify complex resistor, capacitor, and inductor networks, Convert delta to wye and vice versa, Convert current to voltage sources and vice versa, Design or find resistor values, Step-by-step simplification visualization, Educational study tab with electrical laws and formulas

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OpAmplifiers free?

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

### Is Circuit free?

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

### Which has better reviews, OpAmplifiers or Circuit?

OpAmplifiers is rated higher. OpAmplifiers averages 5.0 out of 5 from 1 ratings, while Circuit averages 1.0 from 2 ratings.

### Do OpAmplifiers or Circuit have ads?

Circuit shows ads; OpAmplifiers does not.

### Which is updated more often, OpAmplifiers or Circuit?

OpAmplifiers ships an update every 6 weeks, and Circuit every 5 weeks. Most recently, OpAmplifiers was updated on September 23, 2026 and Circuit on September 24, 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.*