# iSmith vs Electric heating calculator

The clearest difference is ads: Electric heating calculator at none against iSmith's shown. Electric heating calculator also leads on iOS requirement (12.0 vs 16.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | iSmith | Electric heating calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ismith/id6444874930/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | — |
| Monetization | Ad-supported | — |
| Size | 7 MB | 39 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ryoun Chon Shin](https://appshunter.io/developer/1657565687) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## 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


### Electric heating calculator

[App page](https://appshunter.io/ios/app/electric-heating-calculator/id6740424670)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iSmith free?

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

### Is Electric heating calculator free?

Electric heating calculator is free to download, with no in-app purchases.

### Do iSmith or Electric heating calculator have ads?

iSmith shows ads; Electric heating calculator does not.

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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.*