Work through these in order:

1. Check the mute button (top-right speaker icon) and the volume slider in Settings (gear icon).
2. Check your phone’s volume with the physical buttons. MotorMorph plays even when your silent switch is on, but the volume buttons still apply.
3. Confirm location is allowed: iOS Settings → MotorMorph → Location → While Using the App (or Always for locked-screen use).
4. Get a clear GPS signal. In a parking garage, tunnel, or dense city start, GPS can take a moment to lock. Sound builds once you’re moving in the open.
5. You need to be moving. At a standstill the vehicle idles quietly by design. The engine comes alive as your speed climbs.

• GPS reports speed only when it has a good fix. Wait until you’re outdoors and moving above walking pace.
• Very slow speeds (under ~1 mph) read as 0 to avoid jitter — this is normal.
• If you’re testing indoors, use “Try it parked” instead.

• Turn effects only play while the car is actually moving — so waving the phone around while parked won’t set them off.
• Gentle, sweeping turns may not cross the threshold. Tighter corners trigger the effect more reliably.
• If your phone is loose in a cupholder or bag, motion detection is less accurate; a secured mount works best.
• To hear turn sounds on demand, use the “Turn!” button in “Try it parked” mode.

MotorMorph is built to keep playing with the screen locked while mounted. For this to work, set iOS Settings → MotorMorph → Location to Always, which allows the app to keep reading speed in the background.

With location set only to “While Using,” iOS may pause updates when the screen locks.

• Another audio app (music, navigation, a phone call) may be interrupting the audio. Pause other audio apps, then reopen MotorMorph.
• If it doesn’t recover, fully close MotorMorph (swipe it away in the app switcher) and relaunch.

• Engine rumble uses your phone’s haptic hardware. iPad and some older iPhones don’t support it, so you’ll get sound without vibration — this is expected.
• Make sure iOS Settings → Sounds & Haptics → System Haptics is on.
• Haptics are subtle at idle and grow stronger as you speed up and corner.

MotorMorph keeps the screen awake while open so you can glance at your speed. If it still dims, check your Low Power Mode setting, which can override this.

A demo mode for when you’re not driving. It replaces GPS with a speed slider and a press-and-hold “Turn!” button, so you can preview every vehicle and sound from anywhere. It turns on automatically if location access is denied.

No. Your location is used only, in the moment, to read your speed for the engine sound. It is never stored, never transmitted, and never leaves your device. There are no accounts, no analytics, and no network connections.

Location provides your speed; motion sensors detect turns. Both are used purely to make the sounds react to your driving.

So the engine keeps playing when your screen locks during a drive — the main way people use the app while mounted in a car. Nothing is collected in the background; it only reads speed.

No. Every engine is synthesized live on your device, so it reacts instantly and never loops or repeats.

Yes — open Settings (gear icon) and choose your speed unit.

Yes, in both portrait and landscape.

Using GPS and audio continuously does use more battery than an idle phone. For long drives, keep your phone on the car charger.

MotorMorph is designed so the driver never has to touch the screen — the sound follows your driving automatically. Set your vehicle before you go, or let a passenger handle vehicle changes and honks. Always keep your attention on the road and obey all traffic laws.