# OpAmplifiers vs Opamp tools

The clearest difference is in-app purchases: OpAmplifiers at none against Opamp tools's 1. OpAmplifiers also leads on update cadence (every 6 weeks vs every 12 months) and iOS requirement (6.0 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. Opamp tools sells 1 one-off in-app purchase. OpAmplifiers asks for nothing beyond the download.

OpAmplifiers ships an update every 6 weeks, Opamp tools every 12 months. The most recent releases landed on September 23, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | OpAmplifiers | Opamp tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/opamplifiers/id700960348/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 12 months |
| Monetization | Free | — |
| Size | 3 MB | 4 MB |
| Requires iOS | **6.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kyrill Cousson](https://appshunter.io/developer/478650872) | [Siu Yuen Ho](https://appshunter.io/developer/814088527) |

## 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


### Opamp tools

[App page](https://appshunter.io/ios/app/opamp-tools/id1616271826)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock pro feature | $1.99 | one-time |


## Frequently asked questions

### Is OpAmplifiers free?

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

### Is Opamp tools free?

Opamp tools is free to download, with in-app purchases available.

### Do OpAmplifiers or Opamp tools have ads?

Neither OpAmplifiers nor Opamp tools shows ads.

### Which is updated more often, OpAmplifiers or Opamp tools?

OpAmplifiers ships an update every 6 weeks, and Opamp tools every 12 months. Most recently, OpAmplifiers was updated on September 23, 2026 and Opamp tools on September 26, 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.*