Exhaust Note: Engine Sound Sim
Sound born from firing order
Free · Designed for iPad. Not verified for macOS.
Exhaust Note is not an app that plays back engine recordings. It synthesizes the sound from scratch, every moment, from the firing order created by cylinder layout and crankpin phasing.
Why a crossplane V8 rumbles, why a flatplane screams, why a V12 idle throbs — it all comes from the physics of firing intervals. This app computes that physics in real time.
■ Real-time synthesized exhaust
- Zero recorded samples. Crank-angle integration → per-cylinder firing → exhaust-pipe propagation, computed every sample
- Distinct primary pipe, mid-pipe and muffler model for every engine
- Muffler continuously adjustable from straight pipe to quiet
■ Engine collection
- Presets from inline-3 to V12, based on real-car specs
- Crossplane vs flatplane V8 — same eight cylinders, completely different sound
- Firing order and rumble index shown as specs
■ Pop and bang + flames
- Afterburn pops on throttle lift and downshifts
- Flames at the 3D exhaust tips, same instant and same bank as the sound
■ Tunnel mode
- Reverb that wraps the sound in wall reflections, like driving into a tunnel
■ A living 3D machine
- Crankshaft, pistons and connecting rods rotate in phase with the sound
- Gearbox cutaway: constantly meshed gear pairs and real synchro-sleeve movement
- Observe the mechanism at 1/10 slow motion, or switch to real time for phase match
■ The feel of driving
- Torque-converter launch, rev matching, manual H-pattern shifter
- Haptics on rev limiter, wheelspin, shifts and ABS
- Analog pedals: press position controls pedal travel
Built by a gearhead, for gearheads.
Game Center leaderboards now open, and ten achievements have arrived.
• Lap time leaderboards for every circuit and engine are live. Until now the dashboard only said nothing was set up.
• Added ten achievements: hearing all eleven engines, a lap with every assist off, a tilt-steered lap, a manual-gearbox lap, passing 250 km/h, and more.
• Find them in Settings. Progress keeps accumulating even without signing in to Game Center.
The developer, seihee han, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- seihee han
- Size
- 9.6 MB
- Category
- Entertainment
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
English and 10 more
- English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Turkish
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 seihee han

