Reaction Time
v2.2.0 · 5.1 MB · code 20
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File information
UpdatedJul 16, 2025
PublishedMar 3, 2021
Packagehackman.trevor.reactiontimetest
Versionv2.2.0 (20)
Size5.1 MB
MD56a511516ba03d4874fa8c4b7641aea3d
Min SDK26
Malware scanTRUSTED
Signature SHA161:14:7A:0E:7B:BA:A0:25:B3:0E:4B:30:6C:AC:9F:16:EA:05:87:80
SignerCN=Trevor Hackman, O=Acrotar, L=Alpharetta, ST=Georgia, C=US
Total downloads10,000
This version10,000
DeveloperHackman
Age ratingEveryone
What's new in v2.2.0
Update to support Android 14 (API 34).
Security scan
TRUSTED
- Developer signature verified 2025-07-16
- Signature SHA1 61:14:7A:0E:7B:BA:A0:25:B3:0E:4B:30:6C:AC:9F:16:EA:05:87:80
- File MD5 6a511516ba03d4874fa8c4b7641aea3d
How to install Reaction Time v2.2.0 on Android 8.0 Oreo+
Takes about 2 minutes. You'll need roughly 5.1 MB of free storage.
- Grab hackman.trevor.reactiontimetest_20.apk — hit the Download button above (5.1 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 6a511516ba03d487…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find hackman.trevor.reactiontimetest_20.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=Trevor Hackman, O=Acrotar, L=Alpharetta, ST=Georgia, C=US. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open Reaction Time — tap Open on the install screen, or find the Reaction Time icon in your app drawer.
Common install errors for Reaction Time
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 8.0 Oreo or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.