Engine Sim vs Model Engine Builder
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Engine Sim
Experience realistic engine sounds with interactive controls. Explore a variety of engines, from kei cars to V12s, and feel the vibrations. Practice gear shifting and rev-matching for an immersive automotive simulation.
- 10 realistic engine sounds
- Interactive throttle control
- Live engine sound generation
- Straight-pipe mode
- Haptic feedback
- H-pattern shifter and paddles
- Rev-matching practice
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Press the pedal and the engine roars for real. Just move your finger and 28 different engines come alive — from a 660cc turbo kei car to a W16 hypercar, all the way to a racing V10 that screams to 19,000 rpm. It's a new kind of toy you can just pick up and play. No complicated setup. Drag across the screen and feel how good a good engine sounds. SIMPLE TO PLAY, DEEP IF YOU WANT IT - 28 engine sounds: V-twin, turbo kei car (660cc), inline-4, inline-5, inline-6, boxer-4, flat-6, V6, cross-plane and flat-plane V8s, V10, V12, W16, and a racing V10 to 19,000 rpm - A throttle that reacts to exactly how hard you press: ease in for a soft idle, floor it for a full-throttle scream - Every sound is made live, not a recording on loop — so the same rev never sounds exactly the same twice - Straight-pipe mode in the chassis tuning screen: open up the exhaust for more pops and bangs on lift-off - Haptics that pulse with the revs, so you feel the engine in your hand - Color RPM gauge with a rev-limiter cutout FOR CAR PEOPLE, THERE'S MORE - An H-pattern shifter (switch to paddles anytime) so you change gears yourself - Practice rev-matching: brake, blip the throttle, shift. Nail it and it's smooth; botch it and you feel the driveline thump - Per-cylinder firing and uneven exhaust timing keep it from ever sounding like a loop - Tune each engine: spend miles earned by driving on mufflers, intakes, headers, superchargers, cams and ECU maps, and see your 0–100 km/h (0–62 mph) time, top speed and torque change on the spot - Chassis tuning shared across every engine: weight reduction, aero and a lighter flywheel - A Parts Crate for extra parts, with the odds shown in the app - Garage miles keep accruing even while the app is closed - A Pit Stop summary after every drive: distance, miles earned, and any personal bests - Daily tasks, a login bonus, and achievements you can trade in for perks - Game Center leaderboards for top speed and 0–100 km/h - Invite friends with a referral code for bonus miles WHO IT'S FOR - Anyone who loves engine and car sounds - Anyone who wants a bit of fun tinkering with a car while waiting or on the go - Fans curious what a V12 or flat-6 sounds like without owning one - Drivers who want to practice rev-matching before getting behind the wheel AVAILABILITY You start with the inline-4 and every core feature, with no ads on the driving screen. Driving earns miles that unlock the remaining engines and parts through the unlock tree. The next unowned V6, V8 or V12 engine can be rented for 10 minutes after a short video ad, and straight-pipe mode can be unlocked for 24 hours the same way. An optional one-time purchase removes the full-screen ads shown between engine switches; rentals, straight-pipe trials and mile rewards stay available either way. No subscriptions. Tip: headphones or earphones bring out the fine detail in every sound.
Model Engine Builder
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Build, run and collect engines in your own pixel-art workshop. Fit parts, tighten bolts, adjust the setup and time the ignition in four scored stages. Keep each finished engine on your shelf, complete Control and Response inspections, or try an untimed Free Run with throttle, load and start/stop controls. 15 ENGINES Four engines are ready to play. The other eleven can each be permanently unlocked on this device by completing an optional rewarded ad when available. The new designs are an inline three-cylinder, a flat-six and a supercharged V8. A one-time, non-consumable Remove Ads purchase unlocks all 15 engines and removes ads. It is not a subscription. BUILD AGAIN WITH A GOAL Follow your next workshop goal, collect inspection stamps and improve your weakest build stage. Assembly, setup and ignition demands now increase across four-, six-, eight- and twelve-cylinder engines. Compete on the existing online leaderboards through Game Center. Each engine has its own board. Existing board IDs and records are preserved; the three new engines have separate boards. Only completed four-stage build scores from 0 to 1000 are submitted, and higher records are kept. Failed score uploads remain queued for retry. Same-rules comparisons are an on-device coaching aid, not a replacement for online rankings. Core gameplay works offline without a separate account. Online rankings require internet and platform sign-in; ads and purchases require internet. Progress is stored on the device. Engine behavior and readings are game approximations, not engineering measurements.
Screenshots
Verdict
The clearest difference is chart position: Engine Sim at #98 against Model Engine Builder's unranked. Engine Sim also leads on update cadence (every 3 days vs weekly). Model Engine Builder's advantage is iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases 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 Sim sells 10 one-off in-app purchases and Model Engine Builder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Engine Sim ships an update every 3 days, Model Engine Builder weekly. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.
| Parameter | Engine Sim | Model Engine Builder |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (1.2K ratings) — better | — |
| Positive reviews | 82.6% of reviews | — |
| Number of ratings | 1.2K — better | — |
| Update frequency | Every 3 days — better | Weekly |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #98 — better | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 18.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 44 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Sena Takasawa | MIN GYu OH |
In-app purchases
Engine Sim
- Starter Pack$1.99
- Big Radiator$1.99
- Over-Rev Kit$1.99
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- Today's Engine (I6/V8)$1.99
- Big Bore Kit$2.99
- Custom Gearbox$3.99
- Today's Engine (V10/V12)$4.99
- W16 Hypercar$9.99
- Pro Parts Pack$9.99
- Unlock Everything$49.99
Model Engine Builder
- removeads$1.99
Questions
Is Engine Sim free?
Is Model Engine Builder free?
Do Engine Sim or Model Engine Builder have ads?
Which is updated more often, Engine Sim or Model Engine Builder?
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