DRUID

DRUID is a 3-minute or less test that measures cognitive and motor impairment.

Michael Milburn · com.owl.druid

Not rated yet 10K+ downloads v3.5.8 107.7 MB Android 11+ PEGI 12 · Low Maturity

Download APK 107.7 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v3.5.8 (611)
Updated: Sep 24, 2026 (15 days ago)
APK size: 107.7 MB
Requires: Android 11+ (API 30)
CPU support: x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Health & Fitness (app)
Listed since: Mar 27, 2021 (at least)
Permissions: 38 (2 sensitive)
Website: impairmentscience.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

DRUID is an app by Michael Milburn in the Health & Fitness category, listed since at least March 2021. It includes native code for x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 3.3.4, the minimum Android version rose from 9 to 11. It asks for 38 permissions, 2 of them sensitive: read phone status and identity and read shared storage. It asks for the same permissions as version 3.5.7. The app offers in-app purchases through Google Play and can read the advertising ID that ad and analytics services use.

What's new in v3.5.8

Fixes and Improvements

Description

From the listing uploaded by “appupdater”.

Druid is a test for personal and workplace use that measures the impairment of cognitive and motor functions. Available for all smartphones and tablets, users can choose with each use between either a 1-minute Rapid Test or a 3-minute Benchmark Test. Grounded in cognitive neuroscience, Druid is a breakthrough technology. It brings you a sophisticated tool that measures impairment from any cause, including cannabis and other drugs, alcohol, fatigue, illness, injury, chronic condition, or severe stress. Druid operates like a video game while it measures hundred of neurophysiological indicators. Start your free 14-day trial today. Are your employees fit for duty? Employees impaired by drugs, alcohol, fatigue, or stress exhibit slower reflexes, impaired balance, and poor judgement. Impairment reduces productivity, increases liability costs, and magnifies employees' and co-workers' exposure to risk of injury or even death. The Druid app, coupled with Druid Enterprise, an online management dashboard, and database, allows employers to monitor and analyze their employees' fitness for duty. For Druid in the workplace, please contact [email protected].

Version history

5 versions are listed, going back to v3.3.4. New versions arrive here every few months. Since v3.5.4 it requires Android 11+.

v3.5.8 LATEST Sep 24, 2026 107.7 MB TRUSTED v3.5.7 Aug 6, 2026 104.1 MB TRUSTED v3.5.6 May 1, 2026 103.4 MB TRUSTED v3.5.4 Mar 4, 2026 103.2 MB TRUSTED v3.3.4 Nov 20, 2024 99.3 MB TRUSTED

All 5 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 24, 2026.
Certificate issued to “JFG” 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 24, 2026
Validated against Google Play Sep 24, 2026
Signed byCN=Serhiy Shkatulo, O=JFG, L=Kremenchuk, ST=Poltava, C=380
Signing certificate (SHA-1)76:15:24:64:0A:C4:FC:9B:77:8F:07:21:73:B7:3E:BC:4F:31:F8:C9
File MD51842a8b86cb2f3ac59070b8f9222ee9c
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 (38)

DRUID requests 38 permissions, 2 of them sensitive.

Read phone status and identity Sensitive android.permission.READ_PHONE_STATE
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access notification policy android.permission.ACCESS_NOTIFICATION_POLICY
Advertising ID com.google.android.gms.permission.AD_ID
Badge read (custom) com.sec.android.provider.badge.permission.READ
Badge write (custom) com.sec.android.provider.badge.permission.WRITE
Badger badge count read (custom) me.everything.badger.permission.BADGE_COUNT_READ
Badger badge count write (custom) me.everything.badger.permission.BADGE_COUNT_WRITE
Broadcast close system dialogs android.permission.BROADCAST_CLOSE_SYSTEM_DIALOGS
Control vibration android.permission.VIBRATE
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
High sampling rate sensors android.permission.HIGH_SAMPLING_RATE_SENSORS
Home broadcast badge (custom) com.sonyericsson.home.permission.BROADCAST_BADGE
Home provider insert badge (custom) com.sonymobile.home.permission.PROVIDER_INSERT_BADGE
In-app purchases (Google Play Billing) com.android.vending.BILLING
Internal broadcast protection (app-defined) com.owl.druid.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Launcher change badge (custom) com.huawei.android.launcher.permission.CHANGE_BADGE
Launcher read settings (custom) com.htc.launcher.permission.READ_SETTINGS
Launcher read settings (custom) com.huawei.android.launcher.permission.READ_SETTINGS
Launcher read settings (custom) com.oppo.launcher.permission.READ_SETTINGS
Launcher update badge (custom) com.majeur.launcher.permission.UPDATE_BADGE
Launcher update count (custom) com.anddoes.launcher.permission.UPDATE_COUNT
Launcher update shortcut (custom) com.htc.launcher.permission.UPDATE_SHORTCUT
Launcher write settings (custom) com.huawei.android.launcher.permission.WRITE_SETTINGS
Launcher write settings (custom) com.oppo.launcher.permission.WRITE_SETTINGS
Prevent the device from sleeping android.permission.WAKE_LOCK
Read Google service settings com.google.android.providers.gsf.permission.READ_GSERVICES
Read app badge android.permission.READ_APP_BADGE
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Schedule exact alarms android.permission.SCHEDULE_EXACT_ALARM
Show notifications android.permission.POST_NOTIFICATIONS
Use biometric hardware android.permission.USE_BIOMETRIC
Use fingerprint hardware android.permission.USE_FINGERPRINT
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Wi-Fi android.hardware.wifi

DRUID APK: questions and answers

Is there a version of DRUID for older Android phones?

The current version needs Android 11 or later. Version 3.3.4 is the newest listed build that installs on Android 9 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 3.3.4 · All versions

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 DRUID free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the DRUID 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 1842a8b86cb2f3ac59070b8f9222ee9c.