Your vote. Your tuning.
Internet radio in 432 Hz – for iPhone, CarPlay and Apple TV
Or leave it in the original — your call.
iPhone · iPad · CarPlay · Apple TV
No device, no station of its own — you listen to the stations you already know.
Your ballot
Mark your cross, listen.
Pick your music and your frequency. The app measures and retunes — the gearbox shows you what happens. You hear the difference instantly.
0,00 Cents measure small pitch differences: 100 cents make a semitone, 1 cent is barely audible. More about cents →
— Hz
— Hz
L R
- 1 Measure
- 2 Engage
- 3 Retune
- Tempo stays
Choose your music
Preview · AI music, pre-retuned
Preview, pre-tuned. The app measures live. Sound only after a click.
Try it right now
The web player runs in your browser, no install needed.
Everywhere you listen.
Core feature
Find the right station
Search by name — part of it is enough. By genre, such as classical, jazz or rock. Or by mood, such as “focus”, “relax” or “party”.
Several devices. One beat.
Pair your iPhone, iPad and Apple TV: the devices play your station at the same time — in the living room, throughout the home or in a hotel room.
The devices keep their clocks in step and play at the same time.
How simultaneous? That also depends on your devices →
“I fill the apartment with music, but not through volume. I use several devices that coordinate with each other and play the same thing at the same time.”
Available now
Radio 432 is in the App Store.
Measuring in three steps
- 1 · Measure
- 2 · Retune
- 3 · Listen — the tempo stays the same
440 Hz is a standard, not a law of nature. Radio 432 shows you where the music being played stands — and you decide.
How it works
„The app I'd found didn't support CarPlay. So I built my own."
I'm on the road a lot. Operating a phone while driving doesn't work — and pulling into a parking lot every time I want to switch stations isn't exactly convenient.
While building it, I noticed: with old recordings, the pitch depends on how fast they were played back during digitization. A formula that only assumes how a station broadcasts can be wrong. So: listen continuously, measure and tune to match.
I trained as a precision mechanic. Estimates and assumptions aren't reliable work, in my book.
Questions
Is Radio 432 a radio station?
No. Radio 432 is an app. You use it to listen to internet radio stations that already exist. The app listens continuously, measures how the music is tuned and corrects its distance from 432 Hz. You can switch this off at any time.
Is this a device?
No. Radio 432 is an app for iPhone, iPad, CarPlay, and Apple TV. You don't need to buy anything extra — for the car, just one with CarPlay.
Does the tempo change?
No. Only the pitch shifts — how much depends on where the music being played sits: 440 Hz to 432 Hz is −31.77 Cents measure small pitch differences: 100 cents make a semitone, 1 cent is barely audible. More about cents → , music at 444 Hz needs a bigger shift. The tempo always stays the same.
Can I turn off 432 Hz?
Yes. One tap switches between original and 432 Hz — on iPhone just as in CarPlay.
So the mood feels right.
Radio 432 — the radio app for iPhone, iPad, CarPlay, and Apple TV.
