KnowDrugs Drug Checking
Philipp Kreicarek Health & Fitness In-app purchases
Pill reports, drug profiles & safer use advice
- Rating
- 4.2
- 2.2K ratings
- Downloads
- 901K+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Sep 17
- 2026 · v4.7.7
Screenshots
About KnowDrugs Drug Checking
KnowDrugs is the easiest way to lookup drug testing results, pill warnings and drug alerts and provides you with drug info about more than 200 drugs, along with advice on harm reduction and safer use. Taking drugs always involves risks - however, if you do decide to take drugs, KnowDrugs can help you to take appropriate measures to reduce potential harms.
DRUG INFORMATION & EDUCATION
Check the profiles of more than 200 drugs for educational purposes: Stimulants like MDMA and Amphetamine, depressants such as Alcohol and Benzodiazepines or psychedelics like 2C-B, LSD and DMT.
KnowDrugs provides you with drug education harm reduction advice, focusing on MDMA / Molly / Ecstasy and other psychoactive substances. Knowing about the wanted and unwanted effects of drugs, their duration, interactions and risks helps you to make more informed decisions, reduce risks and reflect upon your drug habits and consumption behaviour.
DRUG CHECKING, PILL WARNINGS & DRUG ALERTS
Search for drug name, substance or location, to find drug alerts from nearby and learn about their ingredients and dosage strength to avoid overdose and particularly dangerous cuts (e.g. PMA).
Drug checking or pill testing is a way to reduce the harm from drug consumption by allowing users to find out the content and purity of substances that they intend to consume. This empowers users to make safer choices: to avoid more dangerous substances and combination and to use smaller quantities.
If you don't have access to professional drug testing services, looking up recent drug testing results can still help you make a more informed decision about your consumption.
HARM REDUCTION & RESPONSIBLE DRUG USE
Harm reduction aims to minimize the harms associated with recreational substance use. The harm reduction approach follows from the idea that substance use is a high-risk activity that innately entails the possibility of injury, addiction, and death. Therefore, the best strategy one can employ (outside of avoiding use entirely) is to take appropriate measures to mitigate its potential harms.
KnowDrugs highlights the harm-potential of more than 200 substances and demonstrates strategies on how to reduce the harms associated with the consumption of drugs.
KNOWDRUGS CAN ALSO HELP YOU TO:
- learn how to spot and react in case of an emergency, take care of someone experiencing a bad trip at a party or festival
- find a free and confidential counselling service which accepts you and your personal choices, and helps you develop the right strategies and competencies if you want to change something about your consumption behaviour.
DRUG INFORMATION & EDUCATION
Check the profiles of more than 200 drugs for educational purposes: Stimulants like MDMA and Amphetamine, depressants such as Alcohol and Benzodiazepines or psychedelics like 2C-B, LSD and DMT.
KnowDrugs provides you with drug education harm reduction advice, focusing on MDMA / Molly / Ecstasy and other psychoactive substances. Knowing about the wanted and unwanted effects of drugs, their duration, interactions and risks helps you to make more informed decisions, reduce risks and reflect upon your drug habits and consumption behaviour.
DRUG CHECKING, PILL WARNINGS & DRUG ALERTS
Search for drug name, substance or location, to find drug alerts from nearby and learn about their ingredients and dosage strength to avoid overdose and particularly dangerous cuts (e.g. PMA).
Drug checking or pill testing is a way to reduce the harm from drug consumption by allowing users to find out the content and purity of substances that they intend to consume. This empowers users to make safer choices: to avoid more dangerous substances and combination and to use smaller quantities.
If you don't have access to professional drug testing services, looking up recent drug testing results can still help you make a more informed decision about your consumption.
HARM REDUCTION & RESPONSIBLE DRUG USE
Harm reduction aims to minimize the harms associated with recreational substance use. The harm reduction approach follows from the idea that substance use is a high-risk activity that innately entails the possibility of injury, addiction, and death. Therefore, the best strategy one can employ (outside of avoiding use entirely) is to take appropriate measures to mitigate its potential harms.
KnowDrugs highlights the harm-potential of more than 200 substances and demonstrates strategies on how to reduce the harms associated with the consumption of drugs.
KNOWDRUGS CAN ALSO HELP YOU TO:
- learn how to spot and react in case of an emergency, take care of someone experiencing a bad trip at a party or festival
- find a free and confidential counselling service which accepts you and your personal choices, and helps you develop the right strategies and competencies if you want to change something about your consumption behaviour.
What’s new
Version 4.7.7 · Updated September 17, 2026
Full UI redesign, security improvements, updated interaction data for more than 200 substances
User reviews
Very bloody educational
Hat down for info bout that shyt
Ok, Hi! First off, This app is just fantastic! I can always watch out where the closest drug use has been taken! I love the chemistry part and the added information of the drug! I am actually really interested in drugs (Of course I won't take any) and how it affects you mentally. Even though I am only 13 years old, ...
Phenomenal.
Very useful and easy
This is an amazing app! Very user-friendly, with a lot of important resources. I especially love the database of chemicals. Much-recommended for anyone who uses psychoactive drugs.
Frequently asked questions
What does KnowDrugs provide?
KnowDrugs provides drug testing results, pill warnings, drug alerts, and drug information about over 200 drugs. It also offers advice on harm reduction and safer drug use.
What kind of drug information can I find on KnowDrugs?
You can find information about different types of drugs, such as stimulants, depressants, and psychedelics. It covers drugs like MDMA, Amphetamine, Alcohol, Benzodiazepines, 2C-B, LSD, and DMT.
What is drug checking or pill testing?
Drug checking or pill testing is a method to reduce harm from drug consumption. It allows users to determine the content and purity of substances they intend to consume. This helps users make safer choices and avoid dangerous substances and combinations.
How can KnowDrugs help with harm reduction?
KnowDrugs highlights the harm potential of various substances and provides strategies on how to reduce the risks associated with drug use. It aims to minimize the harms associated with recreational substance use.
Can KnowDrugs help in case of an emergency or a bad drug experience?
Yes, KnowDrugs can help you learn how to spot and react in case of an emergency or take care of someone experiencing a bad trip at a party or festival.
Does KnowDrugs offer counseling services?
KnowDrugs can help you find a free and confidential counseling service that accepts your personal choices. They can also assist in developing the right strategies and competencies if you want to change something about your drug consumption behavior.
Alternatives to KnowDrugs Drug Checking
Looking for apps like KnowDrugs Drug Checking? Here are 6 similar Android apps on Google Play. The highest rated is Davis's Drug Guide (4.8/5), and all 6 are free to download.
-
Dose - Drug Journal 4.4
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Drug Addiction Calendar - Quit 4.3
-
Davis's Drug Guide 4.8
-
Medscape 4.3
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MedSchool 4.6
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Grow with Jane - Cannabis plan 4.1
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| KnowDrugs Drug Checking | 4.2 / 5 | Free | 500,000+ | Sep 17, 2026 | |
| Dose - Drug Journal | 4.4 / 5 | Free | 5,000+ | Sep 13, 2020 | Compare |
| Drug Addiction Calendar - Quit | 4.3 / 5 | Free | 500+ | Jun 7, 2020 | Compare |
| Davis's Drug Guide | 4.8 / 5 | Free | 100,000+ | May 14, 2026 | Compare |
| Medscape | 4.3 / 5 | Free | 5,000,000+ | Oct 16, 2026 | Compare |
| MedSchool | 4.6 / 5 | Free | 50,000+ | – | Compare |
| Grow with Jane - Cannabis plan | 4.1 / 5 | Free | 500,000+ | Oct 20, 2026 | Compare |
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