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EDUCATION · ANDROID

Four

by Mozaik Education

Interactive 3D Animation designed to turn learning into a playful experience.

4.20 ★

(500+ reviews)

5M+

Downloads

Everyone

Content rating

A closer look

Overview

The four-stroke Otto engine is the most commonly used engine in cars. This type of engine works by converting fuel into energy through a series of four strokes: intake, compression, combustion, and exhaust. During the intake stroke, the fuel and air mixture is drawn into the engine. In the compression stroke, the mixture is compressed to increase its energy potential. The combustion stroke ignites the mixture, causing it to expand and push the piston down. Finally, the exhaust stroke releases the waste gases from the engine.

Mozaik Interactive 3D offers an engaging way to learn about technology through interactive 3D animations. Designed for students between 8 and 18 years old, the scenes can be rotated, enlarged, and viewed from pre-set angles. Some scenes even include a Walk mode, allowing users to explore the scene themselves. Narrations, built-in animations, and entertaining quizzes make the scenes both informative and fun. The scenes are available in several languages, providing an opportunity to learn and practice foreign languages.

To navigate the scenes, users can rotate the scene by dragging their finger, zoom in or out by pinching with their fingers, and pan the view by dragging with three fingers. Predefined views can be accessed by tapping the buttons at the bottom of the screen. The context menu, which can be accessed by touching the bottom corners, allows users to change the language and set other functions. VR mode can be activated by pressing the VR goggles icon in the bottom right corner, and in VR mode, users can tilt their head to the right or left to display the navigation panel.

Overall, Mozaik Interactive 3D provides an engaging and informative way to learn about technology through interactive 3D animations. The scenes are designed for students between 8 and 18 years old but can be interesting for everyone. With over 1200 similar 3D scenes available through the mozaik3D App, users can explore a wide range of topics and learn in a fun and interactive way.

App Download

Get Four from an official store or available APK channel.

Available for Android

Get on Google Play Download APK iOS unavailable

Previous Versions

ZIP files require a Split APKs Installer (e.g., SAI) from Google Play to install. Steps: 1. Download SAI from Google Play; 2. Open SAI and tap "Install APKs"; 3. Select the ZIP file; 4. Complete installation.

V1.201

Package Name: com.rendernet.ottoengine
Version Name: V1.201
Version Code: V1.201
File Size: 115.82 MB
Update time: 2024-5-29

V1.98

Package Name: com.rendernet.ottoengine
Version Name: V1.98
Version Code: V1.98
File Size: 110.3 MB
Update time: 2022-9-14

V1.93

Package Name: com.rendernet.ottoengine
Version Name: V1.93
Version Code: V1.93
File Size: 58.2 MB
Update time: 2019-3-7

V1.92

Package Name: com.rendernet.ottoengine
Version Name: V1.92
Version Code: V1.92
File Size: 60.2 MB
Update time: 2019-2-22

V1.91

Package Name: com.rendernet.ottoengine
Version Name: V1.91
Version Code: V1.91
File Size: 50.6 MB
Update time: 2018-8-3

V1.9

Package Name: com.rendernet.ottoengine
Version Name: V1.9
Version Code: V1.9
File Size: 52.3 MB
Update time: 2018-5-24

Frequently Asked Questions

What is the latest version of Four?

The latest version currently listed by Appspicked is V1.98, with information updated on Mar 11, 2026. Versions may vary by device, region, or rollout schedule, so users should also check Google Play or announcements from Mozaik Education.

Is Four safe to download and use?

No website can guarantee that an app is completely risk-free. Appspicked recommends downloading Four only from an official app store or a verified channel operated by Mozaik Education. Before installing, confirm the developer name, package ID com.rendernet.ottoengine, requested permissions, privacy policy, and download source.

Why can’t I find Four in the App Store?

Four may be unavailable because of regional restrictions, device incompatibility, account or age settings, a temporary removal, a name change, or because it has not been released for that platform. An Android package page does not necessarily mean that an iOS App Store version exists. Check Mozaik Education’s official website for current availability.

Where can I download or update Four?

Use Google Play or another official download channel provided by Mozaik Education whenever possible. Appspicked provides app information and store links, but users should verify the destination domain and publisher before downloading or updating the app.

Why is the version shown on Appspicked different from the app-store version?

The information on Appspicked may represent the most recently indexed snapshot. App stores sometimes release updates gradually or display different versions according to region, device, operating system, or testing group. The official store listing should be treated as the final reference.

Which devices and operating systems support Four?

Four is listed for Android, with a reported minimum requirement of Not specified. Actual compatibility may also depend on the device model, region, available storage, hardware features, and installed system components.

Is Four free?

The initial download may be free, but subscriptions, advertising, paid features, or in-app purchases may still apply. Prices and available purchases can vary by country and version. Check the payment information displayed by Google Play before completing a transaction.

What should I do if Four cannot be installed or updated?

Check the network connection, storage space, operating-system version, account region, and device compatibility. Restart the device and try again through the official store. If the problem continues, consult the support resources provided by Mozaik Education.