# Blaxtair vs RF calculator & Smith Chart

The clearest difference is in-app purchases: Blaxtair at none against RF calculator & Smith Chart's 1. Blaxtair also leads on update cadence (every 2 months vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. RF calculator & Smith Chart sells 1 one-off in-app purchase. Blaxtair asks for nothing beyond the download.

Blaxtair ships an update every 2 months, RF calculator & Smith Chart every 4 months. The most recent releases landed on October 9, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Blaxtair | RF calculator & Smith Chart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/blaxtair/id6479296852/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | — |
| Size | 47 MB | 31 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Arcure](https://appshunter.io/developer/1735474151) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### Blaxtair

[App page](https://appshunter.io/ios/app/blaxtair/id6479296852)

Manage and optimize your systems with this intuitive mobile application. Easily upload/download data, upgrade software, and configure detection zones for enhanced safety and productivity.

**Highlights:** Easy software updates, Data upload and download, Customizable detection zones, User-friendly interface, System configuration management

**Features:** macOS Compatibility

**In-app purchases:** none


### RF calculator & Smith Chart

[App page](https://appshunter.io/ios/app/rf-calculator-and-smith-chart/id6757265018)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| upgrade to pro | $3.99 | one-time |


## Frequently asked questions

### Is Blaxtair free?

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

### Is RF calculator & Smith Chart free?

RF calculator & Smith Chart is free to download, with in-app purchases available.

### Do Blaxtair or RF calculator & Smith Chart have ads?

Neither Blaxtair nor RF calculator & Smith Chart shows ads.

### Which is updated more often, Blaxtair or RF calculator & Smith Chart?

Blaxtair ships an update every 2 months, and RF calculator & Smith Chart every 4 months. Most recently, Blaxtair was updated on October 9, 2026 and RF calculator & Smith Chart on October 22, 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.*