Traffic Light

A simple traffic lights simulator for education purposes.

TK Soft · com.trungkienioicamp.trafficlightsimulation

Not rated yet 100K+ downloads v2.3 5 MB Android 4.0+ PEGI 3 · Everyone

Download APK 5 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.3 (9)
Updated: Sep 12, 2026 (27 days ago)
APK size: 5 MB
Requires: Android 4.0+ (API 14)
CPU support: Any (no native code)
Graphics: OpenGL ES 2.0+
Category: Education (app)
Listed since: Mar 27, 2023 (at least)
Permissions: 5
Developer contact: [email protected]

About this APK

Traffic Light is an app by TK Soft in the Education category, listed since at least March 2023. It has no native code, so it runs on any Android processor.

It asks for 5 permissions, none of them sensitive.

Description

From the listing uploaded by “appupdater”.

- This app is made to teach children how traffic lights works. ★ ★ ★ ★ ★ FEATURES ★ ★ ★ ★ ★ - Has two modes: Auto and Manually. Auto mode uses a countdown timer that starts out with a green light, then turns yellow, then turns red. Manually mode stops the timer and you can change the lights with a tap on the screen. - Display time of each light is configurable. - Support multiple devices and screen sizes.

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 12, 2026.
Certificate issued to “Nextlabs” This is the certificate of the Google Play version.

Store checks and file details

Developer signature verified Sep 12, 2026
Validated against Google Play Sep 12, 2026
Signed byCN=Tran Trung Kien, OU=Nextlabs, O=Nextlabs, L=Singapore, ST=Singapore, C=65
Signing certificate (SHA-1)CD:F1:5A:90:5F:DB:0A:03:8C:BF:91:EF:69:C6:9C:DD:29:8D:CF:B4
File MD5d80db03f482b63afa69700916e5f399d
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (5)

Traffic Light requests 5 permissions, none of them sensitive.

Full network access android.permission.INTERNET
Prevent the device from sleeping android.permission.WAKE_LOCK
Push messaging (app-defined) com.trungkienioicamp.trafficlightsimulation.permission.C2D_MESSAGE
Receive push notifications com.google.android.c2dm.permission.RECEIVE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Portrait screen android.hardware.screen.portrait

Traffic Light APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Traffic Light APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. After downloading, check that the file's MD5 is d80db03f482b63afa69700916e5f399d.