Comparison

FlexicX vs Engine Simulator

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

FlexicX

Experience unparalleled softbody destruction with a cutting-edge physics engine. Engage in interactive crash tests with lifelike car models that crumple, bend, and break in real-time. Optimized for mobile, this game offers a dynamic and immersive destruction simulation.

Highlights
  • Realistic softbody physics
  • Dynamic car deformations
  • Interactive crash tests
  • Lifelike car models
  • Optimized mobile performance
  • Unique crash scenarios
Features
Read full description

Welcome to a world where every collision feels real, every deformation is dynamic, and every crash is breathtakingly authentic. Powered by FlexicEngine, the cutting-edge physics engine developed by SIDGIN, this game delivers an unparalleled softbody destruction experience. Each crash is a unique spectacle, with cars reacting to impacts as they would in real life. Why FlexicEngine? • Super Realistic Physics: FlexicEngine simulates the behavior of flexible materials with incredible precision, bringing a new level of realism to softbody dynamics. • Immersive World: Every car crumples, bends, and breaks in real-time, creating a lifelike experience that pulls you into the action. • Optimized for Mobile: Despite its advanced physics, the game runs smoothly on most mobile devices, ensuring a seamless gaming experience. What Awaits You: • Interactive Crash Tests: Engage with diverse obstacles, from steel barriers to massive walls, each designed to test the limits of destruction. • Lifelike Car Models: Every vehicle is crafted with attention to detail, responding to crashes with realistic deformations and damage. • Dynamic Challenges: Tackle unique crash scenarios that push your driving and survival skills to the edge. Support Our Mission! We’ve just launched this ambitious project and need your feedback to make it even better. Creating realistic softbody physics on mobile devices is a massive challenge, but with your help, we’re determined to perfect it. Download now and experience the power of FlexicEngine. Become the master of crash tests in the most realistic softbody simulator ever created! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Engine Simulator

Explore the physics of piston engines by building, tuning, and testing them. Simulate combustion and rigid body motion in real-time. Compete with others on a global leaderboard by posting your creations.

Highlights
  • Physics-based engine simulation
  • Build engines from scratch
  • Tune fuel and ignition maps
  • Real-time power and torque readings
  • 3D engine visualization
  • Global leaderboard
Features
Read full description

Engine Simulator is a physics-based piston engine sandbox. The sound and motion come from a real rigid body simulation of the crank, pistons, valves, and combustion, not recordings. Start an engine, work the throttle, and tune its fuel and ignition maps in the ECU. Build one from scratch (layout, bore, stroke, cam, firing order) or describe what you want and have it generated on device. Watch it run in 3D, read live power and torque on the dyno, or push it past the limiter until it breaks. Post your engines to the global leaderboard and compare against other builders. Engine Simulator for iOS is an unofficial port. It is not affiliated with, endorsed by, or supported by AngeTheGreat (Ange Yaghi), the creator of the original open source Engine Simulator. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Community Guidelines: https://saada7553.github.io/community-guidelines.html Privacy Policy: https://saada7553.github.io/privacy-policy.html Support: https://saada7553.github.io/support.html

Screenshots

FlexicX4 screens
Engine Simulator4 screens

Verdict

The call

The clearest difference is rating: FlexicX at 4.8 against Engine Simulator's 4.3. FlexicX also leads on update cadence (every 8 days vs every 2 months) and ratings volume (11K vs 98). Engine Simulator's advantage is ads (none vs shown). On price, review sentiment, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. FlexicX sells 7 in-app purchases, starting at $2.99 per month and Engine Simulator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

FlexicX holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: FlexicX has 11K ratings behind it against 98, so its average is the more settled of the two. Written reviews point the same way: 88% of FlexicX's written reviews are positive against 81% of Engine Simulator's.

UpkeepUpdate frequency

FlexicX ships an update every 8 days, Engine Simulator every 2 months. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

Scorecard5 real differences · 6 level
FlexicX versus Engine Simulator: the parameters behind the verdict, then further details
ParameterFlexicXEngine Simulator
PriceFreeFree
Rating4.8 (11K ratings) — better4.3 (98 ratings)
Positive reviews88.2% of reviews — better80.8% of reviews
Number of ratings11K — better98
Update frequencyEvery 8 days — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#109#37 — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better18.6
Further details — not scored
Size1.2 GB22 MB
Age rating4+4+
DeveloperSIDGIN LLCMUHAMMAD SAAD ATA

Customer experience

FlexicX

All ratings10,980 ratings
Positive95.4%
Neutral1.7%
Negative3.0%
Written reviews1,891 reviews
Positive88.2%
Neutral4.8%
Negative7.0%

Engine Simulator

All ratings98 ratings
Positive83.7%
Neutral7.1%
Negative9.2%
Written reviews78 reviews
Positive80.8%
Neutral6.4%
Negative12.8%

Bugs and requests

FlexicX

Reported bugs

5 issues
  • Mustang engine model issues
  • Machforce GT button bug
  • Inability to link Game Center account
  • Garage texture loading issues
  • Limited maps and terrain options

Requested features

4 requests
  • Add more maps and terrain options
  • Improve ways to earn in-game currency
  • Fix bugs with unlocking certain cars
  • Optimize performance and stability

Engine Simulator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

FlexicX

Subscriptions1
  • Premium Silver$2.991 Month
One-time6
  • Gold 100$1.99
  • Gold 300$3.99
  • Gold 700$6.99
Show 3 more
  • Gold 1000$9.99
  • Gold 5000$39.99
  • Gold 15000$99.99
1 purchases

Engine Simulator

One-time1
  • Lifetime$8.99

Questions

Is FlexicX free?
FlexicX is free to download, with in-app purchases available.
Is Engine Simulator free?
Engine Simulator is free to download, with in-app purchases available.
Which has better reviews, FlexicX or Engine Simulator?
FlexicX is rated higher. FlexicX averages 4.8 out of 5 from 11K ratings, while Engine Simulator averages 4.3 from 98 ratings.
Do FlexicX or Engine Simulator have ads?
FlexicX shows ads; Engine Simulator does not.
Which is updated more often, FlexicX or Engine Simulator?
FlexicX ships an update every 8 days, and Engine Simulator every 2 months. Most recently, FlexicX was updated on October 13, 2026 and Engine Simulator on October 10, 2026.
Which is more popular, FlexicX or Engine Simulator?
FlexicX currently peaks at #109 in the App Store charts, and Engine Simulator at #37. Chart position reflects recent download velocity rather than total install base.

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