Powertrain Lab: Engine Sounds

Realistic engine sound that responds to your drive.

Give your drive a personal engine soundtrack. Powertrain Lab uses calibrated iPhone motion to shape a virtual engine and gearbox through acceleration, shifts and coasting. No vehicle adapter or app account needed.

FIND YOUR ROAR
Explore 26 engine characters: 24 recorded cars and two synthesized voices. Browse supercars, track legends and icons, from V8s and V12s to flat-sixes and a rotary. Open Garage at the top of the home screen and hear every engine before choosing.

CHOOSE WHERE YOU LISTEN
Move your virtual listening position to the front, rear or either side of a recorded car. Adjust exterior angle and distance, then blend in cabin sound. Lift-off and shift detail vary by car. Preview your mix while parked and use your chosen iOS audio output, with or without music. Pro lets you use custom mixes in sessions.

COMPARE IN DRIVE LAB
Hear two setups over the same 28-second example drive, including acceleration, shifts and coasting. All parked previews and Drive Lab comparisons are free and do not use your daily allowance.

MAKE EVERY SHIFT YOURS
Choose Automatic or Manual, with Economy, Normal and Sport automatic profiles. Each car has its own virtual gearbox and shift map. Pro adds custom ratios with up to eight gears and 12 named local setups. Archive, restore or export favorites. A passenger or parked user can change available engines during a session without recalibrating.

APPLE WATCH COMPANION
See your virtual gear and request Manual shifts from the paired Apple Watch app. Find installation instructions in the iPhone app. Use controls while parked or as a passenger; they never control your vehicle.

EVERY CAR, FIVE MINUTES A DAY
Free includes five minutes total each day, shared across all standard cars, including Apex. New installations start with recorded 488 Stock; existing choices are kept. Switching cars does not reset the allowance. At the limit, sound pauses and your selected car and calibration are kept. Parked previews and Drive Lab remain free.

Playing session audio uses the allowance, including idle and neutral revs. Pauses and 0% engine volume do not. A new allowance requires an internet-verified UTC day; remaining time works offline.

PRO: KEEP YOUR SOUND GOING
Monthly and yearly Pro have the same benefits: unlimited session time, supported custom sound controls, custom gear ratios and saved setups. Saved setups remain viewable and exportable after Pro expires. Standard cars remain available within the Free daily allowance.

SET UP WITH CONFIDENCE
The animated first-launch guide covers mounting, audio and calibration. Replay it while parked from Settings & help or any Garage settings screen. Motion processing stays on iPhone. No ads or analytics SDK. Optional local diagnostics contain no coordinates or microphone audio and are exported only by your choice.

Set up while parked, mount securely and calibrate each session. Drivers must not operate phone or Watch screens while moving. RPM, gear and load are simulated, not vehicle measurements. Optional location assists speed estimation. This is not a speedometer or safety system. Response depends on phone, mount and audio route; Bluetooth adds delay.

Recorded voices use permitted third-party recordings and event automation, tuned for the app in our studio. They are independent interpretations, not exact factory recreations or manufacturer endorsements. Requires iOS 17 or later; optional watchOS 10 companion with a paired iPhone.

Pro auto-renews at Apple's localized price and period shown before purchase. Payment is charged to your Apple Account. Cancel at least 24 hours before renewal in Apple's subscription settings. Deleting the app does not cancel it. Restore purchases is available in Pro.

Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy: https://mwsupplylimited.github.io/powertrainlab/privacy.html