# KnowDrugs Drug Checking

> Pill reports, drug profiles & safer use advice

Canonical page: [https://chrome-stats.com/d/cc.phk.knowdrugs](https://chrome-stats.com/d/cc.phk.knowdrugs)

## Overview

- **ID:** `cc.phk.knowdrugs`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Plant Product Design
- **Category:** EDUCATION
- **Downloads:** 895,894
- **Rating:** 4.16 / 5 (2,229 ratings)
- **Version:** 4.7.6
- **Last updated:** 2026-09-11
- **First published:** 2017-05-25
- **Publisher country:** DE
- **Size:** 97 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=cc.phk.knowdrugs)
- **Website:** [https://www.knowdrugs.app](https://www.knowdrugs.app/)
- **Privacy policy:** [https://knowdrugs.app/privacy-policy/](https://knowdrugs.app/privacy-policy/)

## Description

KnowDrugs Drug Checking is a comprehensive Chrome extension designed to enhance drug safety and education. It provides access to drug testing results, pill warnings, and alerts covering over 200 substances including stimulants, depressants, and psychedelics. Users can explore detailed drug profiles, learn about effects, interactions, and risks, empowering informed and safer consumption decisions.

Additionally, KnowDrugs emphasizes harm reduction by offering practical advice on safer drug use, emergency response strategies, and access to confidential counseling services. Whether you're seeking to reduce risks associated with drug use or educate yourself about psychoactive substances, KnowDrugs offers essential tools and information to support responsible and informed choices.

## Rankings

- #72,756 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACCESS_NOTIFICATION_POLICY`
- `android.permission.ACCESS_WIFI_STATE`
- `android.permission.CAMERA`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.READ_PHONE_STATE`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.SCHEDULE_EXACT_ALARM`
- `android.permission.SYSTEM_ALERT_WINDOW`
- `android.permission.USE_BIOMETRIC`
- `android.permission.USE_FINGERPRINT`
- `android.permission.USE_FULL_SCREEN_INTENT`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `cc.phk.knowdrugs.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.android.vending.BILLING`
- `com.google.android.c2dm.permission.RECEIVE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.providers.gsf.permission.READ_GSERVICES`

## Review summary

Users broadly praise KnowDrugs for up-to-date, comprehensive drug information and its harm-reduction focus, finding it informative for research and education. However, multiple reviews note content gaps, including inability to identify common drugs or vitamins, and express a desire for offline access and offline data caching. These recurring points suggest strong value in information quality and safety benefits, but the app would benefit from expanded coverage and offline functionality.

### Pros

- Up-to-date, comprehensive drug information.
- Harm-reduction and safety-focused content.
- Informative and useful for research.

### Cons

- Content gaps: insufficient drug coverage; unable to identify many common drugs or vitamins.
- Need for offline access: requests to cache substance data offline and use offline drops.

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Source: [Chrome-Stats](https://chrome-stats.com/d/cc.phk.knowdrugs)