# Electronic Component Pinouts vs Opamp tools

The clearest difference is price: Opamp tools at Free against Electronic Component Pinouts's $4.99. Electronic Component Pinouts's advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 12 months). On ads, device support and iOS requirement there is nothing between them.

Opamp tools is free to download; Electronic Component Pinouts costs $4.99 up front. Opamp tools sells 1 one-off in-app purchase. Electronic Component Pinouts asks for nothing beyond the download.

Electronic Component Pinouts ships an update every 3 weeks, Opamp tools every 12 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Electronic Component Pinouts | Opamp tools |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.0 (7 ratings)](https://appshunter.io/ios/app/electronic-component-pinouts/id1502320574/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 12 months |
| Monetization | Paid | — |
| Size | 37 MB | 4 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Adriano Moutinho](https://appshunter.io/developer/1502320573) | [Siu Yuen Ho](https://appshunter.io/developer/814088527) |

## What reviewers say

### Electronic Component Pinouts

[App page](https://appshunter.io/ios/app/electronic-component-pinouts/id1502320574)

Access an extensive offline database of over 80,000 electronic component pinouts, including chips, transistors, and microcontrollers. Quickly find information and equivalents without needing an internet connection. Users can also request new pinouts to be added.

**Highlights:** Offline database, 80,000+ pinouts, Transistors, diodes, chips, Microcontrollers & Arduino, Fast search, Component equivalents

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

**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 Electronic Component Pinouts free?

Electronic Component Pinouts costs $4.99, with no in-app purchases.

### Is Opamp tools free?

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

### Do Electronic Component Pinouts or Opamp tools have ads?

Neither Electronic Component Pinouts nor Opamp tools shows ads.

### Which is updated more often, Electronic Component Pinouts or Opamp tools?

Electronic Component Pinouts ships an update every 3 weeks, and Opamp tools every 12 months. Most recently, Electronic Component Pinouts was updated on November 3, 2026 and Opamp tools on November 3, 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.*