# Explain 3D FREE: Understand how stuff works

> Interactive 3D simulations for understanding how things work. (iPhone/iPad app by ePic design s.r.o..)

- Source: https://appshunter.io/ios/app/explain-3d-free-understand-how-stuff-works/id968247111 (this page in markdown: same URL + `.md`)
- Developer: [ePic design s.r.o.](https://appshunter.io/developer/1019479194)
- Category: Education, Games, Simulation
- Price: Free
- Rating: 2.00/5 from 5 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 84 MB
- Languages: English
- Released: 2015-02-25
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/explain-3d-free-understand-how-stuff-works/id968247111/reviews.md

## What is Explain 3D FREE?

Explain3D success:
***TOP 25 GEW - Global start up competition finalist 2013 (http://www.cnbc.com/id/101168347/page/6)***

Explain3D is system of interactive simulations, that can help you to explain, how things work. Simulations are built in interactive 3D environment, which brings fun to education and helps understand the stuff. 

Simulations in FREE version:
- Car workshop - 4 stroke engine, 

Simulations in FULLversion:
- Car workshop - 4 stroke engine, Car clutch, Manual transmission, Disc brakes, Ignition system
- Discover the Universe - ISS space station, Space shuttle, Solar system
- Electricity around us - Hydroelectric dam, Wind turbine, Nuclear power plant
- Transport simulations - Railroad switch, Submarine, Jet engine
- Our homes - Lock and key, Elevator, Toilet, Desk Lamp
- Tools - Jackhammer, Hand pump

Features:
- Interactive 3D environment
- simple and intuitive interface
- description of main parts of simulations / objects
- nice 3D models and animations
- great to make education more engaging and interesting

## Key features

- Interactive 3D simulations
- Understand how things work
- Car engine simulation (free)
- Detailed 3D models and animations
- Engaging educational content
- Intuitive interface

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/explain-3d-free-understand-how-stuff-works/id968247111/reviews.md

### 1/5 — Useless

*2019-07-22*

They waisted their time making a useless app,DON’T GET THE APP

### 3/5 — Why is there 1 thing

*2019-05-27*

Jug

### 1/5 — Contains ONE basic simulation

*2018-09-24*

Forces you to pay to see anything more than a boring 2-stroke engine. Just a carrot to try and trick people into buying more simulations

### 1/5 — Disappointing

*2017-03-11*

Don't bother unless you pay for the full version, there's only one simulation on the lite version. Just look it up on the internet.

### 5/5 — New Content and update

*2017-03-11*

Please keep new stuff coming.. the prices are a little high though.

### 1/5 — Inaccurate

*2016-09-27*

Tried the 4-stroke simulation to check it out, the flow of fuel and exhaust is poorly timed and would confuse someone entirely that doesn't already know how it works. Fuel appears to flow into the cylinder while the piston is compressing, and exhaust leaves when the fuel should be flowing in, while a vacuum is being formed. 

Doesn't instill confidence in the other simulations of things I don't fully grasp yet.

### 3/5 — Potential. Needs work

*2016-04-17*

Judging from the trial, the animation was good but then it went out of sync and didn't make sense (was wrong). Would be good if you can also slow the animation and click step by step. Needs more work

## Frequently asked questions about Explain 3D FREE

### What simulations are available in Explain 3D FREE?

The free version of Explain 3D includes a simulation of a car's 4-stroke engine. Additional simulations for various systems like transmissions, space exploration, and home appliances are available in the full version.

### How does Explain 3D make education more engaging?

Explain 3D uses an interactive 3D environment with nice 3D models and animations to make learning more interesting. It provides descriptions of main parts and objects within the simulations.

### What devices does Explain 3D support?

Explain 3D is available for iPhone, iPad, and iPod. It is designed to run on Apple's mobile operating systems.

### What is the age rating for Explain 3D?

Explain 3D has an age rating of 4+, making it suitable for young learners and above. The app focuses on visual understanding of mechanical concepts.

### How often is Explain 3D updated?

The last update for Explain 3D was on November 16, 2016, with version 2.2. The app was initially released on February 25, 2015.

### What is the user rating for Explain 3D?

Explain 3D has a rating of 2.0 stars from 5 ratings. This indicates a mixed reception from its current user base.

### Does Explain 3D have ads?

No, Explain 3D does not contain advertisements. The app is free to download and use without ad interruptions.

### Can I track my progress with Explain 3D?

The provided description does not mention specific progress tracking features within the simulations. The focus is on interactive exploration and understanding of how systems work.

## Version history (last 5 releases)

### 2.2 — 2016-11-16

This app has been updated by Apple to display the Apple Watch app icon.

- small bug fixes

### 2.1 — 2016-09-04

- settings so you can adjust move, rotation and zoom speed
- small bug fixes

### 2.0 — 2016-02-05

- new interface for your better navigation in application
- improved materials and textures of models for better and realistic look
- small fixes in animation of models
- navigation in 3D smoother

### 1.25 — 2015-06-25

- small bug fixes
- interface optimizations

### 1.24 — 2015-05-14

- small bug fixes

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## More apps by ePic design s.r.o.

- [Explain 3D: How things work](https://appshunter.io/ios/app/explain-3d-how-things-work/id923255461)
- [Explain 3D: How cars work FREE](https://appshunter.io/ios/app/explain-3d-how-cars-work-free/id1008832037)
- [Explain 3D: Explore the solar system FREE](https://appshunter.io/ios/app/explain-3d-explore-the-solar-system-free/id1051361866)
- [Explain 3D: Dinosaurs world](https://appshunter.io/ios/app/explain-3d-dinosaurs-world/id1064942920)
- [Explain 3D: Dinosaurs world - Jurassic encyclopedia FREE](https://appshunter.io/ios/app/explain-3d-dinosaurs-world-jurassic-encyclopedia-free/id1067788941)

All apps by ePic design s.r.o.: https://appshunter.io/developer/1019479194

## Related topics

[explain 3d](https://appshunter.io/ios/topics/explain-3d)

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*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 2026-06-01.*