# Transistors Handbook vs Learn Physics Offline

The clearest difference is ads: Transistors Handbook at none against Learn Physics Offline's shown. Transistors Handbook also leads on update cadence (fortnightly vs every 15 months) and iOS requirement (11.4 vs 13.0). Learn Physics Offline's advantage is price ($1.99 vs $3.99). On in-app purchases and device support there is nothing between them.

Transistors Handbook costs $3.99 and Learn Physics Offline $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Transistors Handbook ships an update fortnightly, Learn Physics Offline every 15 months. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Transistors Handbook | Learn Physics Offline |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| 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** | Yes |
| Update frequency | **Fortnightly** | Every 15 months |
| Monetization | Paid | — |
| Size | 22 MB | 42 MB |
| Requires iOS | **11.4** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Centro Studi Informatica di Danilo Priore](https://appshunter.io/developer/409935887) | [Muhammad Mubeen](https://appshunter.io/developer/1553722821) |

## 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


### Learn Physics Offline

[App page](https://appshunter.io/ios/app/learn-physics-offline/id6466167562)

**Features:** macOS Compatibility, 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 Learn Physics Offline free?

Learn Physics Offline costs $1.99, with no in-app purchases.

### Do Transistors Handbook or Learn Physics Offline have ads?

Learn Physics Offline shows ads; Transistors Handbook does not.

### Which is updated more often, Transistors Handbook or Learn Physics Offline?

Transistors Handbook ships an update fortnightly, and Learn Physics Offline every 15 months. Most recently, Transistors Handbook was updated on October 6, 2026 and Learn Physics Offline 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.*