# Arduino Pocket Reference vs Electronic Component Pinouts

The clearest difference is price: Arduino Pocket Reference at Free against Electronic Component Pinouts's $4.99. Electronic Component Pinouts's advantage is rating (4.0 vs 2.3) and in-app purchases (none vs 1). On ratings volume, device support and iOS requirement there is nothing between them.

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

Electronic Component Pinouts holds the better App Store score, 4.0 against 2.3. Both are backed by a comparable volume of ratings — 18 and 7 respectively. Written reviews point the same way: 12% of Arduino Pocket Reference's written reviews are positive against 40% of Electronic Component Pinouts's.

Arduino Pocket Reference ships an update every 5 months, Electronic Component Pinouts every 3 weeks. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Arduino Pocket Reference | Electronic Component Pinouts |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [2.3 (18 ratings)](https://appshunter.io/ios/app/arduino-pocket-reference/id969849288/reviews) | **[4.0 (7 ratings)](https://appshunter.io/ios/app/electronic-component-pinouts/id1502320574/reviews)** |
| Number of ratings | **18** | 7 |
| Positive reviews | 11.5% of reviews | **40.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 78 MB | 37 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Vipin Nair](https://appshunter.io/developer/841810400) | [Adriano Moutinho](https://appshunter.io/developer/1502320573) |

## What reviewers say

### Arduino Pocket Reference

[App page](https://appshunter.io/ios/app/arduino-pocket-reference/id969849288)

This app provides a comprehensive reference for Arduino programming, covering core libraries, syntax, operators, and various hardware shields. It includes examples for common functionalities like mouse control, GSM communication, and LCD displays, making it a valuable tool for makers and developers.

**Highlights:** Arduino core libraries list, Mouse and Keyboard control examples, GSM communication examples, LiquidCrystal library functions, Syntax, operators, and data types, Various Arduino board guides, IO and math functions

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertisements | $0.99 | one-time |


### 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


## Frequently asked questions

### Is Arduino Pocket Reference free?

Arduino Pocket Reference is free to download, with in-app purchases available.

### Is Electronic Component Pinouts free?

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

### Which has better reviews, Arduino Pocket Reference or Electronic Component Pinouts?

Electronic Component Pinouts is rated higher. Arduino Pocket Reference averages 2.3 out of 5 from 18 ratings, while Electronic Component Pinouts averages 4.0 from 7 ratings.

### Do Arduino Pocket Reference or Electronic Component Pinouts have ads?

Arduino Pocket Reference shows ads; Electronic Component Pinouts does not.

### Which is updated more often, Arduino Pocket Reference or Electronic Component Pinouts?

Arduino Pocket Reference ships an update every 5 months, and Electronic Component Pinouts every 3 weeks. Most recently, Arduino Pocket Reference was updated on October 21, 2026 and Electronic Component Pinouts on October 9, 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.*