For Microsoft Flight Simulator 2020 & 2024

Press to talk.
ATC answers.

OnFrequency puts a real-sounding controller on every frequency — clearance to centre — and fills the airwaves with the real-world traffic flying around you. Say it your way; it understands, and it talks back like the real thing.

Windows 10/11 · runs alongside the sim on your PC
DLH992EDDF → EHAM Frankfurt Ground · 121.900
STANDING BY
Features

A whole airspace that listens

Not a menu of canned phrases. You key the mic, you speak, and the controller works your flight from the gate to the gate.

Just talk

Hold your yoke button and speak. Speech recognition runs on your own PC, and the controller understands what you meant, not just a script.

Every controller

Clearance, ground, tower, departure, approach and centre — with handoffs, taxi routes, vectors to final and an initial altitude on your clearance, the way it really goes.

Real traffic on frequency

Real aircraft from live ADS-B data fly around you, and you hear them on the radio — and the controller answering them. You're never alone on the frequency.

Voices that sound local

Ground, Tower and Departure are different people, with a VHF radio effect — and abroad, controllers speak English with their own accent.

A crew beside you

An optional co-pilot who can work the radio for you, standard callouts on takeoff and landing, cabin announcements, and a tug driver for the pushback.

Datalink, like the airlines

Pre-departure clearance by text, CPDLC logon and requests, and North Atlantic oceanic clearances — accept on screen, like a real line crew.

Taxi map & checklists

See your cleared taxi route on a live airport map, run interactive checklists, and call ground services from the same window.

SimBrief in one click

Fetch your latest SimBrief flight plan and OnFrequency files it: route, runways, procedures and cruise level, ready before you call for clearance.

A debrief after every flight

When you land you get a review of how the flight went, and you can replay the whole radio conversation from your flight history.

How it works

From the gate in four steps

Install & set up

Run the installer. A short setup picks your microphone and voices and binds push-to-talk to your yoke.

Load your flight

Start the sim at a gate. Pull your plan from SimBrief, or type a departure and destination.

Tune and call

Tap a frequency to tune it. Hold the button and make your call, the way you would in a real cockpit.

Fly the whole flight

Taxi, take off, get handed from sector to sector, and get vectored onto the approach at your destination.

It knows where you are

The right controller, every time

OnFrequency reads your position from the sim and works out who you should be talking to — and on what frequency — as you climb out through the layers of airspace.

  • Real frequencies for the airports and sectors you fly through.
  • Handoffs as you leave one controller's airspace and enter the next.
  • ATC calls you first when it should: boundary crossings, top of descent, traffic.
  • Your squawk and COM1 read from the aircraft, so set your radios like normal.
Requirements

What you need

Windows 10 or 11On the same PC as the sim.
MSFS 2020 or 2024Any aircraft, any airport.
A microphoneA headset is best. A yoke or HOTAS button for push-to-talk is ideal.
An internet connectionFor the controller's brain, live traffic and weather.
FAQ

Questions

Do I need to know real ATC phraseology?

No. Say it in plain English and the controller will understand. If you want to learn proper phraseology, OnFrequency answers the way real controllers do, so you pick it up as you fly.

Does it replace the default ATC in the sim?

Yes — turn the sim's own ATC voice off and use OnFrequency instead. It runs in its own window beside the sim, or on a second monitor.

Do the other aircraft really exist?

The traffic comes from live ADS-B data — real aircraft flying near you right now — and the calls you hear follow what those aircraft are actually doing.

Does it work with VFR flying and small airports?

Yes. Flight following, uncontrolled fields on CTAF, Special VFR, touch-and-goes — from a Cessna 172 to a 747.

What does it cost?

Pricing will be announced at launch, with a free trial so you can hear it for yourself before you buy. Join the early-access list and you'll hear first.

Is my voice recorded or sent anywhere?

Speech recognition runs on your own PC. Only the text of what you said goes online, to produce the controller's answer. See the privacy notice.

Early access

Be first on frequency

OnFrequency is in final testing. Send us a line and you'll be among the first to fly with it, with launch pricing.