# Llock vs iSmith

The clearest difference is in-app purchases: iSmith at none against Llock's 1. Llock's advantage is ads (none vs shown) and iOS requirement (11.0 vs 16.0). On price and device support there is nothing between them.

Both are free to download. Llock sells 1 in-app purchase, starting at $1.99 per month. iSmith asks for nothing beyond the download.

## The numbers

| Metric | Llock | iSmith |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ismith/id6444874930/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | — | Every 2 days |
| Monetization | — | Ad-supported |
| Size | 110 MB | 7 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NCOM d.o.o.](https://appshunter.io/developer/1556412335) | [Ryoun Chon Shin](https://appshunter.io/developer/1657565687) |

## What reviewers say

### Llock

[App page](https://appshunter.io/ios/app/llock/id1611544584)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $1.99 | per month |


### 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


## Frequently asked questions

### Is Llock free?

Llock is free to download, with in-app purchases available.

### Is iSmith free?

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

### Do Llock or iSmith have ads?

iSmith shows ads; Llock 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.*