# Four-stroke Otto engine 3D — user reviews > 25 indexed App Store user reviews of Four by MOZAIK Education Ltd., rated 4.70/5 from 89 ratings. - Source: https://appshunter.io/ios/app/four-stroke-otto-engine-3d/id1376010957/reviews - App overview in markdown: https://appshunter.io/ios/app/four-stroke-otto-engine-3d/id1376010957.md - Rating breakdown: 5★ 71 · 4★ 12 · 3★ 4 · 2★ 2 · 1★ 0 ## Newest reviews (8 of 25) ### 5/5 — Great *2020-11-16, version 1.3* It is very helpful to clarify how the machine works using 3D, I am waiting for the next update :) ### 5/5 — add indonesian language *2020-07-07, version 1.3* add indonesian language ### 5/5 — Great Instructional *2020-03-02, version 1.3* Needed an app that gave good visuals and animation to show son basic engine theory. This delivers .... WITHOUT ADS! ### 5/5 — Impressed! *2019-07-21, version 1.3* Seriously good breakdown of the basic function and automation of an engine. A fantastic visual learning aid. ### 5/5 — Solid Gold! *2019-06-28, version 1.3* Looks great and functions incredibly well. ### 5/5 — Awesome app *2019-05-27, version 1.0* This app is a soul outlet amazing. It helps me learn new things about the piston engine that I never knew before. It also makes it much easier to teach others how an engine works. I love this app and would love to see something like this but for the Mazda wankle rotary engine as there are no apps that animate the rotary engine. ### 5/5 — Fantastica *2019-04-15, version 1.0* Ottima spiegazione ### 5/5 — Отличное приложение! *2018-10-06, version 1.0* Интерактивно и красиво. ## Most critical reviews (10 lowest-rated) ### 2/5 — Trash *2026-07-16, version 1.3* This game is trash what the point ### 2/5 — RPM nerfed *2019-01-22, version 1.0* The representation of the mechanics is fine but the RPM of the engine and the cylinder stroke cycle is unrealistically slow. Also, the bend or dip in the timing belt on top is unrealistic, it should be taut. ### 4/5 — Engine *2026-07-07, version 1.3* I know the game teaches you about engines but like why can’t we control the engine speed? ### 4/5 — V8 *2021-09-21, version 1.3* I would rate this game 10 out of 5 (if I could) this game would be great for me if it had a v8 ### 4/5 — Enjoyable *2020-03-13, version 1.3* The explanation of how a 4-stroke engine works are very clear and easy to understand. The model looks terrific and it is very satisfying to watch the pistons move up and down. To make this app better and more interesting, add more types of engines like for example, V6, V8, and an I6. Also, add a tachometer for RPM to give a representation of how fast an engine really spins. An explanation of more in-depth into an engine like bore • stroke and displacement. Also, explain the types of camshafts there are like for example, SOHC and DOHC and valves. Maybe just to polish it up, improve the graphics quality. ### 4/5 — Learned a lot *2019-11-02, version 1.3* Amazing app for learning about cars but one thing is they should add more types of engines ### 4/5 — Very good app with no ads! *2019-05-26, version 1.0* Really good, great representation of the whole car. I’d like to see though at least the name of the part I click or something like that. Still, great animations, free, with no ads! ### 5/5 — Очень очень очень круто *2025-10-22, version 1.3* Очень очень крутое приложение вот мне нравится ### 5/5 — 👍 *2025-07-12, version 1.3* Очень Крутая игра а можете сделать так чтобы можно было управлять машиной ### 5/5 — Beautiful simulation *2023-04-10, version 1.3* Fine animatio, very engaging. ## Most praised reviews (7 highest-rated) ### 5/5 — Molto utile *2022-07-05, version 1.3* Se volete una spiegazione semplice e chiara questa è l’app giusta ### 5/5 — Nice *2022-06-22, version 1.3* Love it ### 5/5 — Love it! *2022-05-31, version 1.3* Just started using the app a few minutes ago and have to say - it’s excellent. Very clean, clear 3-D models depicting the inner workings of the automobile. ### 5/5 — Cool *2021-08-11, version 1.3* I love this app about car engines but there is something strange about it. Why are the pistons brown? ### 5/5 — engine *2021-08-07, version 1.3* Good application ### 5/5 — Proper education for free charge *2021-07-04, version 1.3* The software gives understanding of engine with everything that goes with . As well as mature drawings. And nobody has to pay for the free version which is already very good. ### 5/5 — Beautiful, informative info and app *2021-03-31, version 1.3* Almost magical 3D presentation n of the Otto 4-stroke, with overviews of its operation and many detailed sections and gorgeous yet clear illustrations. Highly recommend. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*