Reaction Time

A simple ad-free tool for measuring your reaction time.

Hackman · hackman.trevor.reactiontimetest

Not rated yet 50K+ downloads v2.3.0 6.1 MB Android 8.0+ PEGI 3 · Everyone

Download APK 6.1 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.3.0 (21)
Updated: Sep 2, 2026 (1 month ago)
APK size: 6.1 MB
Requires: Android 8.0+ (API 26)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Tools (app)
Listed since: Mar 3, 2021 (at least)
Permissions: 3
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Reaction Time is an app by Hackman in the Tools category, listed since at least March 2021. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

It asks for 3 permissions, none of them sensitive. It asks for the same permissions as version 2.2.0.

What's new in v2.3.0

Update to support the latest version of Android, Android 17 (API 37).

Description

From the listing uploaded by “appupdater”.

Measure your reaction time to the nearest millisecond. A novel hold-and-release system combined with trials is used. * How to use * To begin, press and hold your finger to the screen. When the screen turns green, lift your finger up as fast as you can. Complete a total of 5 trials to get a final average of your reaction time. No lifting early! Lifting early causes your current run to be reset.

Version history

3 versions are listed, going back to v2.1.0.

v2.3.0 LATEST Sep 2, 2026 6.1 MB TRUSTED v2.2.0 Jul 16, 2025 5.1 MB TRUSTED v2.1.0 May 17, 2024 5 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 2, 2026.
Certificate issued to “Acrotar” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Sep 2, 2026
Validated against Google Play Sep 2, 2026
Signed byCN=Trevor Hackman, O=Acrotar, L=Alpharetta, ST=Georgia, C=US
Signing certificate (SHA-1)61:14:7A:0E:7B:BA:A0:25:B3:0E:4B:30:6C:AC:9F:16:EA:05:87:80
File MD5b53e34c16b46644e03681bfe74b6671b
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 (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (3)

Reaction Time requests 3 permissions, none of them sensitive.

Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) hackman.trevor.reactiontimetest.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

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

Reaction Time 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 Reaction Time 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. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is b53e34c16b46644e03681bfe74b6671b.