Engine Lab vs Open V8
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Engine Lab
Design and simulate car engines, from single cylinders to V12s, and hear them run. Explore 3D models, test performance on a dyno, and even drive them with a simulated gearbox. Share your creations and compare them with others.
- Build custom engines
- Hear engines idle and rev
- 3D engine visualization
- Simulated dyno testing
- Manual/automatic gearbox simulation
- Import and share engine builds
Read full descriptionHide full description
Build an engine and hear it run. Engine Lab is a touch-first engine simulator: design anything from a single to a V12, then hear it idle, rev and pull to the limiter, live on your iPhone or iPad. BUILD BENCH • Start from 317 real engines with their published bore, stroke, compression and firing order, or design your own. • Set the layout, 1 to 12 cylinders, bore, stroke, firing order and redline. • Hear each change as you make it, and hold to rev. • Try different headers, exhausts and mufflers. • Compare against a saved version by ear or on the dyno. SEE IT IN 3D • Every engine, including your own builds, becomes a 3D model driven by the live simulation: pistons, crank, cams, valves and glowing headers. • Orbit, zoom, slow it down, switch between X-ray and solid, and tap any part for live readings. The classic 2D cutaway is one tap away. DRIVE IT • Manual or automatic gearbox with clutch and road speed, plus a gearing chart with top speed in each gear. • Simulated dyno pulls with torque and power curves. • Six built-in engines: Honda B18C5 VTEC, Honda TRX520 single, BMW M52B28, Toyota 2JZ, Audi 2.3 inline-5 and GM LS V8. IMPORT AND SHARE • Import engine-sim .mr scripts and share your builds as .mr files. • Export a WAV recorded by the on-device simulator. No account, network service or microphone permission is required. An optional one-time Pro purchase opens every catalog engine, the Specialists and Masters challenges, advanced tuning and unlimited saved builds; the free plan includes 20 catalog engines and keeps three builds. Values are simulated estimates for exploration, not certified engineering measurements.
Open V8
Read full descriptionHide full description
Open V8 is a working V8 engine you can take apart in your hands. Press START and the engine fires up. Every part moves exactly as it does in a real engine: the crankshaft turns, the pistons and connecting rods follow it, the camshaft pushes the lifters and pushrods, the rocker arms open the valves and the spark plugs fire in the right order. Step on the gas and watch the revs climb as the shift lights come on. SEE INSIDE • Explode: pull the lever and the engine comes apart into its parts – heads, valve covers, intake, oil pan and crankshaft – while it keeps running. • Cutaway: slice the block open to see the pistons move inside the cylinders. • X-ray: make the outer parts transparent and watch the valvetrain at work. • Slow motion: slow everything down to 1/10, 1/20 or 1/50 speed. At 1/20 the idle is about 37 rpm, so you can follow every single firing. LEARN EVERY PART Tap any part to learn what it does: the cross-plane crankshaft, the camshaft and roller lifters, valves and springs, timing chain, ignition coils, fuel injectors, headers and more. HEAR IT The sound is not a recording. It is generated live by an engine synthesizer from the firing order, the revs and the throttle, so you hear the uneven cross-plane rumble at idle, the intake roar under load and the crackle when you lift off. PUT IT IN YOUR ROOM On iPhone and iPad you can place the running engine on your table or floor in augmented reality, walk around it, turn it and resize it. BUILT FROM REAL NUMBERS The engine is modelled from the published dimensions of a classic 6.2 L pushrod V8: bore, stroke, rod length, deck height, valve sizes and cam timing. NO ACCOUNTS, NO ADS, NO TRACKING Open V8 collects no data at all. Great for students, mechanics, car enthusiasts and anyone who has ever wondered what actually happens under the hood.
Screenshots
Verdict
The clearest difference is in-app purchases: Open V8 at none against Engine Lab's 1. Engine Lab's advantage is iOS requirement (18.0 vs 27.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Engine Lab sells 1 one-off in-app purchase. Open V8 asks for nothing beyond the download.
| Parameter | Engine Lab | Open V8 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (16 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 16 — better | — |
| Update frequency | Every 9 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 — better | 27.0 |
| Further details — not scored | ||
| Size | 16 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Jan Sokol | Patrick Christensen |
In-app purchases
Engine Lab
- Engine Lab Pro$4.99
Open V8
No in-app purchases
Questions
Is Engine Lab free?
Is Open V8 free?
Do Engine Lab or Open V8 have ads?
Other comparisons















