# iSmith vs Electronic

The clearest difference is price: iSmith at Free against Electronic's $9.99. iSmith also leads on rating (5.0 vs 2.3) and update cadence (every 2 days vs fortnightly). Electronic's advantage is ads (none vs shown) and chart position (#169 vs unranked). On in-app purchases and device support there is nothing between them.

iSmith is free to download; Electronic costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iSmith holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

iSmith ships an update every 2 days, Electronic fortnightly. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | iSmith | Electronic |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ismith/id6444874930/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/electronic-toolbox-2/id6752488879/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Fortnightly |
| Monetization | **Ad-supported** | Paid |
| Best chart rank | — | **#169** |
| Size | 7 MB | 166 MB |
| Requires iOS | **16.0** | 18.5 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Ryoun Chon Shin](https://appshunter.io/developer/1657565687) | [Marcus Roskosch](https://appshunter.io/developer/334053438) |

## What reviewers say

### iSmith

[App page](https://appshunter.io/ios/app/ismith/id6444874930)

This app helps users understand impedance matching principles. It allows for reading key network parameters from a Smith chart and calculating various matching networks and pads. Users can also convert between different power and voltage units.

**Highlights:** Read Smith chart parameters (Z, Y, VSWR, Q, Gamma), Calculate 8 L-matching networks, Calculate T & Pi matching pads, Set matching targets on Smith chart, Learn impedance matching principles, dBm, Watts, and Volts conversion, VSWR conversion

**Features:** macOS Compatibility

**In-app purchases:** none


### Electronic

[App page](https://appshunter.io/ios/app/electronic-toolbox-2/id6752488879)

**Currently charting:** #169 Top Paid · Productivity (US App Store)

This comprehensive electronics reference and tool suite offers over 70 calculators, tables, and data for engineers, students, and hobbyists. It features a modern UI, iCloud sync, multi-window support, and PDF export, all accessible offline.

**Highlights:** Over 70 tools, tables, and references, Universal app for iPhone, iPad, and Mac, iCloud sync across devices, Multi-window support for parallel use, PDF export for results, Offline functionality, Modern UI with Dark Mode

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iSmith free?

iSmith is free to download, with no in-app purchases.

### Is Electronic free?

Electronic costs $9.99, with no in-app purchases.

### Which has better reviews, iSmith or Electronic?

iSmith is rated higher. iSmith averages 5.0 out of 5 from 1 ratings, while Electronic averages 2.3 from 3 ratings.

### Do iSmith or Electronic have ads?

iSmith shows ads; Electronic does not.

### Which is updated more often, iSmith or Electronic?

iSmith ships an update every 2 days, and Electronic fortnightly. Most recently, iSmith was updated on November 3, 2026 and Electronic on November 8, 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.*