# KDE Connect vs RF calculator & Smith Chart

The clearest difference is in-app purchases: KDE Connect at none against RF calculator & Smith Chart's 1. KDE Connect also leads on ratings volume (279 vs 1) and rating (4.2 vs 4.0). On price, update cadence, ads and device support there is nothing between them.

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

KDE Connect holds the better App Store score, 4.2 against 4.0. That said, the two scores are not equally well evidenced: KDE Connect has 279 ratings behind it against 1, so its average is the more settled of the two.

KDE Connect ships an update every 3 months, RF calculator & Smith Chart every 4 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | KDE Connect | RF calculator & Smith Chart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (279 ratings)](https://appshunter.io/ios/app/kde-connect/id1580245991/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/rf-calculator-and-smith-chart/id6757265018/reviews) |
| Number of ratings | **279** | 1 |
| Positive reviews | 60.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free | — |
| Size | 8 MB | 31 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KDE e.V.](https://appshunter.io/developer/1580245993) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### KDE Connect

[App page](https://appshunter.io/ios/app/kde-connect/id1580245991)

Seamlessly integrate your devices with features like a shared clipboard, file sharing, and remote control. Use your phone as a virtual touchpad or keyboard, and even control presentations remotely. All communication is secured with end-to-end encryption.

**Highlights:** Shared clipboard, File and URL sharing, Virtual touchpad and keyboard, Remote presentation control, Remote command execution, End-to-end encryption

**In-app purchases:** none

**What reviewers like**

- 🚀 Works seamlessly across devices
- 👍 Easy to set up and use
- 🔒 Secure file transfer
- 💡 Innovative remote control features
- 🤖 Great for Linux/KDE integration

**What reviewers complain about**

- 🐛 Occasional crashes and connectivity issues
- 🔋 Drains battery when running in the background
- 🤖 Limited functionality on iOS compared to Android
- 🤔 Pairing can be unreliable at times

**Reported bugs**

- Clipboard push feature not working
- App crashes on launch for some users
- Incompatibility with certain device/OS combinations
- Inability to discover/connect to devices in some cases

**Requested features**

- Add support for background operation
- Improve multi-file transfer capabilities
- Integrate with system share sheet
- Implement two-finger scrolling and other gestures
- Add SMS/notification sync features


### 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 KDE Connect free?

KDE Connect 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.

### Which has better reviews, KDE Connect or RF calculator & Smith Chart?

KDE Connect is rated higher. KDE Connect averages 4.2 out of 5 from 279 ratings, while RF calculator & Smith Chart averages 4.0 from 1 ratings.

### Do KDE Connect or RF calculator & Smith Chart have ads?

Neither KDE Connect nor RF calculator & Smith Chart shows ads.

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

KDE Connect ships an update every 3 months, and RF calculator & Smith Chart every 4 months. Most recently, KDE Connect was updated on November 3, 2026 and RF calculator & Smith Chart on November 5, 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.*