# Transistors Handbook vs Polynomial

The clearest difference is update cadence: Transistors Handbook at fortnightly against Polynomial's monthly. Transistors Handbook also leads on iOS requirement (11.4 vs 15.1). Polynomial's advantage is price ($1.99 vs $3.99). On ads, in-app purchases and device support there is nothing between them.

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

Transistors Handbook ships an update fortnightly, Polynomial monthly. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Transistors Handbook | Polynomial |
| --- | --- | --- |
| 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 | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Paid | — |
| Size | 22 MB | 36 MB |
| Requires iOS | **11.4** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Centro Studi Informatica di Danilo Priore](https://appshunter.io/developer/409935887) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## 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


### Polynomial

[App page](https://appshunter.io/ios/app/polynomial-solver-pro/id1619312553)

**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 Polynomial free?

Polynomial costs $1.99, with no in-app purchases.

### Do Transistors Handbook or Polynomial have ads?

Neither Transistors Handbook nor Polynomial shows ads.

### Which is updated more often, Transistors Handbook or Polynomial?

Transistors Handbook ships an update fortnightly, and Polynomial monthly. Most recently, Transistors Handbook was updated on October 6, 2026 and Polynomial on October 11, 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.*