# Transistors Handbook vs Digital Electronics Pro

The clearest difference is update cadence: Transistors Handbook at fortnightly against Digital Electronics Pro's every 2 months. Transistors Handbook also leads on price ($3.99 vs $4.99) and iOS requirement (11.4 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Transistors Handbook costs $3.99 and Digital Electronics Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Transistors Handbook ships an update fortnightly, Digital Electronics Pro every 2 months. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Transistors Handbook | Digital Electronics Pro |
| --- | --- | --- |
| Price | **$3.99** | $4.99 |
| Rating | **[4.0 (22 ratings)](https://appshunter.io/ios/app/transistors-handbook/id474379633/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 27.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Paid | — |
| Size | 22 MB | 21 MB |
| Requires iOS | **11.4** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Centro Studi Informatica di Danilo Priore](https://appshunter.io/developer/409935887) | [ALG Software Lab SIA](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Transistors Handbook

[App page](https://appshunter.io/ios/app/transistors-handbook/id474379633)

This app serves as a comprehensive guide to transistors, offering detailed information on over 51,000 types. Users can search for transistors by name or power, view graphical schemas, and access datasheets. It's designed to assist in selecting and designing electronic circuits.

**Highlights:** Database of over 51,000 transistors, Detailed transistor specifications, Graphical schema and code information, Search by name or power, Online datasheet access, Information on Silicon and Germanium transistors

**Features:** macOS Compatibility

**In-app purchases:** none


### Digital Electronics Pro

[App page](https://appshunter.io/ios/app/digital-electronics-pro/id6478407802)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Transistors Handbook free?

Transistors Handbook costs $3.99, with no in-app purchases.

### Is Digital Electronics Pro free?

Digital Electronics Pro costs $4.99, with no in-app purchases.

### Do Transistors Handbook or Digital Electronics Pro have ads?

Neither Transistors Handbook nor Digital Electronics Pro shows ads.

### Which is updated more often, Transistors Handbook or Digital Electronics Pro?

Transistors Handbook ships an update fortnightly, and Digital Electronics Pro every 2 months. Most recently, Transistors Handbook was updated on October 6, 2026 and Digital Electronics Pro on October 12, 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.*