# FSi Radio Preview

> Flight simulator aviation radio control addon for PC simulators. (iPhone/iPad app by Knolis Ltd..)

- Source: https://appshunter.io/ios/app/fsi-radio-preview/id642135076 (this page in markdown: same URL + `.md`)
- Developer: [Knolis Ltd.](https://appshunter.io/developer/524036269)
- Category: Games, Utilities, Simulation
- Price: Free
- Rating: 2.33/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 38 MB
- Languages: English
- Released: 2013-05-16
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/fsi-radio-preview/id642135076/reviews.md

## What is FSi Radio Preview?

The FSi Radio is an universal all in one aviation radio addon for your favorite flight simulator. It allows you to control the frequencies for the whole radio stack and it also includes DME for the IFR enthusiasts. 

IMPORTANT - this app is intended for Microsoft Flight Simulator X or X-Plane users and is not usable on its own. You will need the iPad and the computer running the simulator to be on the same network. 

Features:
COM1 and COM2 VHF voice radio mode
NAV1 and NAV2 VHF navigation radio mode
ADF1 and ADF2 navigation radio mode
DME1 and DME2, linked to NAV1 and NAV2 receivers
Active and Standby frequency displays, allowing easy frequency adjustment with an instant swap function

Remembers the last mode used. You can have up to 8 iOS devices in your setup, each controlling separate instrument, or used as a backup for the primary one.

Beautiful day and night display schemes.

FSi Server is required to establish the connection between Flight Simulator and your device. It can be downloaded free at http://avioware.com/download.

The preview version is designed for short flights up to 10 minutes.

## Key features

- COM1 and COM2 VHF voice radio control
- NAV1 and NAV2 VHF navigation radio control
- ADF1 and ADF2 navigation radio control
- DME1 and DME2 functionality
- Active and Standby frequency displays
- Day and night display schemes
- Supports multiple iOS devices

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/fsi-radio-preview/id642135076/reviews.md

### 3/5 — Not great

*2020-02-29*

Doesn’t support 8khz frequencies, so not a lot of good.... unless you’re using an old flight sim program that also doesn’t support 8khz radio.

### 4/5 — Reality !!

*2013-08-05*

Perfect X-plane companion.
Set-up less than a minute.
FSi panel for 172 even better !!

## Frequently asked questions about FSi Radio Preview

### What flight simulators does FSi Radio Preview support?

FSi Radio Preview is designed for Microsoft Flight Simulator X and X-Plane. It requires a companion server to connect the simulator to your device.

### Can I use FSi Radio Preview for long flights?

The preview version of FSi Radio is intended for short flights, with a time limit of up to 10 minutes per session.

### How does FSi Radio Preview connect to my simulator?

You need to download the free FSi Server from avioware.com/download. Both your iPad and the computer running the simulator must be on the same network for the connection to be established.

### What radio functions does FSi Radio Preview offer?

It provides control for COM1/COM2 VHF voice radio, NAV1/NAV2 VHF navigation radio, ADF1/ADF2 navigation radio, and DME1/DME2 linked to NAV receivers.

### Does FSi Radio Preview have ads?

No, FSi Radio Preview does not contain advertisements.

### What is the rating for FSi Radio Preview?

FSi Radio Preview has a rating of 2.3 stars based on 3 user ratings.

### What devices is FSi Radio Preview compatible with?

FSi Radio Preview is supported on iPhone and iPod devices.

### How many iOS devices can I use with FSi Radio Preview?

You can connect up to 8 iOS devices to your setup, with each device controlling a separate instrument or serving as a backup.

## Version history (last 5 releases)

### 1.12 — 2017-07-12

This app has been updated by Apple to display the Apple Watch app icon.

UI bug for iPhone 6 and newer fixed

### 1.9 — 2014-04-21

- Dials now use circling motion rather than vertical/horizontal movement
- Optimised network traffic
- Added detection of poor wifi signal and reducing of refresh speed
- IMPORTANT: This update requires a new version of FSi Server

### 1.8 — 2014-02-19

Fixed issue with different ADF ranges in X-Plane and FSX
Fixed increments on VHF radios
Improved knob responsiveness and fixed some bugs in it

### 1.7 — 2013-05-18

Fixed a bug with the swap frequencies button that would cause both frequencies to become the same

### 1.6 — 2013-05-07

No release notes.

## Apps similar to FSi Radio Preview

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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## More apps by Knolis Ltd.

- [FSi C172](https://appshunter.io/ios/app/fsi-c172/id524035566)
- [FSi C172 Free](https://appshunter.io/ios/app/fsi-c172-free/id529863884)
- [FSi Radio](https://appshunter.io/ios/app/fsi-radio/id642100682)
- [FSi R22 Free](https://appshunter.io/ios/app/fsi-r22-free/id871040933)

All apps by Knolis Ltd.: https://appshunter.io/developer/524036269

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*