Support

How are the sounds made? Are they recordings?

No recordings ship in the app. We measured each engine's character offline (its firing pattern, the shape of its exhaust note at idle and under load, how much of it is tone and how much is roar) and the app's sounds are synthesized from that data with an engine model, plus layers for the limiter, crackle, turbo and blow-off, supercharger whine and VTEC. The tachometer and shift lights come from the same simulation, so they stay in sync with what you hear. It's our take on how each engine sounds, not a recording of the car.

Which cars are in the garage?

Twelve: Toyota Supra MK4, Nissan Skyline GT-R R34, Mazda RX-7 FD, Lexus LFA, Ferrari 812 Superfast, Porsche 911 GT3, Ford Mustang GT, Dodge Challenger Hellcat, Mercedes-AMG C63, BMW M3 E46, Honda S2000 and Subaru WRX STI. Every one is free.

I don't hear anything.

Rev Sounds plays as media, so the Ring/Silent switch (or Silent mode on the Action button) doesn't mute it. Instead:

• Press the volume-up button while the app is open. That sets the media volume, which can be at zero even when your ringer is loud.
• Check where the sound is going in Control Center. It may still be connected to Bluetooth headphones, a car or AirPlay.
• If you're on Bluetooth, try the iPhone speaker once to rule the headphones out.

How do I drive?

Open a car and tap Drive.

• Hold Gas to accelerate and Brake to slow down.
• Auto shifts for you. Tap it to switch to Manual, then use the − and + paddles to shift down and up. Watch for the ▲ Up cue and the shift lights.
• For a launch, hold Brake and Gas together, then let go of the brake.
• Engine shows the engine running beside the road.

Do tips unlock anything?

No. Tips are an optional thank-you to the developer. Every car and every feature is free for everyone, with or without a tip.

I tipped by mistake. Can I get a refund?

Purchases are handled by Apple, so refunds are too. Request one at reportaproblem.apple.com.

Will you add more cars?

Yes, over time. Tell us which engine you want to hear next.

Is Rev Sounds linked to the carmakers?

No. Car names only say which engine a sound is modelled on. They are trademarks of their owners, and Rev Sounds isn't affiliated with or endorsed by any manufacturer.