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BACtrack
BACtrack Mouthpieces Buy extra replacement mouthpieces for this model BACtrack Breathalyzer Learn more

BACtrack Mobile Smartphone Breathalyzer for iPhone and Android Devices

4.3 out of 5 stars 193 customer reviews
| 39 answered questions
About the Product
  • Xtend Fuel Cell Sensor Technology - BACtrack's police-grade sensor technology is the same technology trusted by hospitals, clinics, and law enforcement, and offers the highest level of accuracy and consistency
  • Bluetooth Connectivity - Wirelessly connects to your iOS or Android device via Bluetooth
  • BACtrack Companion App - The free BACtrack app saves and tracks BAC results over time, including optional photos, notes and drink logs. Proprietary ZeroLine technology gives you an estimate of when your BAC will return to 0.00%
  • Compatible Devices - Apple iPhone 4S, 5, 5C, 5S, 6, 6+; iPad 3, 4, Mini, Air; iPod Touch 5, 6; Samsung Galaxy S3, S4, S5, S6; HTC One; Sony Xperia Z2, Z3; Google Nexus 5, 6; LG G3, G Flex; Moto X, G and most other popular Android smart devices running Android 4.3 or higher
  • Manufactured by BACtrack - The #1 most-trusted brand of breathalyzers, with over 14 years of experience providing the most accurate, convenient and affordable breath alcohol testing devices on the market

Frequently Bought Together

  • BACtrack Mobile Smartphone Breathalyzer for iPhone and Android Devices
  • +
  • BACtrack Mobile Smartphone Breathalyzer Mouthpieces (Pack of 10)
  • +
  • BACtrack S80 Professional Breathalyzer, Portable Breath Alcohol Tester
Total price: $197.45
Buy the selected items together


Product Description

Instantly transform your smartphone into a police-grade breathalyzer with the award-winning BACtrack Mobile. Quickly and easily estimate your blood alcohol content (BAC), track your BAC results over time, and with ZeroLine, estimate when your BAC will return to 0.00%. Features wireless connectivity via Bluetooth, powerful app-enabled BAC tracking tools and is compatible with most iPhone and Android devices. Because of its police-grade fuel cell sensor technology, BACtrack Mobile is ideal for both personal and professional use.

Product Details

  • Product Dimensions: 1.8 x 0.6 x 2.8 inches
  • Shipping Weight: 8.8 ounces (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • Origin: USA
  • ASIN: B00CFN1HNY
  • UPC: 030955348216 850167002733
  • Item model number: BT-M5
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (193 customer reviews)
  • Amazon Best Sellers Rank: #10,222 in Health & Personal Care (See Top 100 in Health & Personal Care)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

From the Manufacturer

Instantly Connect to the App in Seconds

Utilizing Bluetooth technology, the BACtrack Mobile seamlessly connects to your iPhone or Android smartphone. Connecting is easy - simply open the BACtrack App (after downloading from the iTunes or Google Play stores), power on your Mobile, and voilà, the app automatically recognizes your device!

Bluetooth Connectivity

Guess Your BAC

ZeroLine Technology

Privacy & Sharing

BACtrack Mobile Smartphone Breathalyzer BACtrack Vio Smartphone Keychain Breathalyzer BACtrack S80 Professional Breathalyzer BACtrack Trace Professional Breathalyzer BACtrack S35 Personal Breathalyzer BACtrack Go Keychain Breathalyzer
BACtrack Mobile Smartphone Breathalyzer BACtrack Vio Smartphone Keychain Breathalyzer BACtrack S80 Professional Breathalyzer BACtrack Trace Professional Breathalyzer BACtrack S35 Personal Breathalyzer BACtrack Go Keychain Breathalyzer
Ideal Use Personal & Professional Personal Personal & Professional Personal & Professional Personal Personal
Sensor Type Platinum Fuel Cell Semiconductor Platinum Fuel Cell Platinum Fuel Cell Semiconductor Semiconductor
Accuracy Rating 10 - Most Accurate 7 - Very Accurate 10 - Most Accurate 9 - Extremely Accurate 7 - Very Accurate 6 - Accurate
LCD Screen
Bluetooth Connectivity
ZeroLine - Estimates time to 0.000% BAC
Battery Type Mini-USB Rechargeable Lithium Ion 1 x AAA battery 1 x AAA battery 2 x AAA batteries 2 x AAA batteries 1 x AAA battery
One Year Warranty

Important Information

Legal Disclaimer
Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

Bulb Voltage
3.7 Volts

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
I humbly suggest the BACtrack Select S80 over this model for accuracy and simplicity's sake. Yes this model is smaller, looks cooler, and has a fancy iPhone app. However, it only gets 3 of 5 star rating from me because: (1) it REQUIRES said fancy iPhone app to work AT ALL, which is a little spooky since there is a feature in that app to optionally track your every single drink over a period of time which could in theory I think maybe be used against you in court depending on the circumstances and (2) it was not giving me as consistent readings as my BACtrack Select S80 Professional Edition which makes me just a bit nervous trying to place my confidence and trust in this particular model.

Yes it has one big advantage: it's smaller than the S80 and fits in my front blue jeans pocket. Unfortunately, it's impossible to use subtly e.g. at a bar in the restroom like I had hoped, because you must fiddle with turning on its bluetooth button and then loading the iPhone app to sync with it, and then stare at your iPhone app screen waiting for results and pushing buttons etc, just to use it at all.

If the next version of this unit had the iPhone app as an OPTION and would work without it, e.g. just give you some kind of readout directly on the unit itself, without having to do all that fiddling around, then ... yes, I'd be glad to give it another try. Until then, this is only used for fun when friends come over at my house.
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Verified Purchase
This thing is small enough to fit in your coat pocket in the winter and your center console in the warmer months (You'll want to do this just to keep the unit from getting too cold, etc.). And, it charges up with micro USB, so most car chargers are perfectly capable of charging it up even. When I was growing up, this kind of technology was simply not available, so we took a lot of stupid risks and had extremely little knowledge about how alcohol actually affected us. Now, with products like this, there's virtually no excuse to not have one if you drink alcohol at all. Seriously, probably one of the best decisions I've ever made. I purposefully spent the last several weeks drinking and testing myself under different conditions (empty stomach, with food, specific drink counts, etc.). I now have a pretty good handle on how many drinks my body can safely handle, and how to make absolutely sure that I am nowhere near the limit. Biggest surprise was how long your BAC takes to drop, so if you have only a couple drinks, then a few more several hours later... It's pretty easy to get over the limit. And, if I'm curious, or one of my friends is being belligerent and stupid, I just whip this out. Buy it, use it. Especially if you have kids, for the love of all that is good in this world, please buy them one of these. It empowers you to know about alcohol and your own body in a way I wish I would have been able to when I was younger.
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Vine Customer Review of Free Product ( What's this? )
I once was a juror on a drunken driving case and the judge actually said, "I want to make it clear. It is not illegal to drink and drive; it is illegal to drive drunk or impaired". Well, it doesn't take much alcohol to get you legally drunk or impaired.

This tiny little device (2" X 3" X 0.5") is a complex breathalyzer that uses your iPhone for results! It only takes less than a minute to `pair' with your iPhone (you must download the free BACtrack app. It will ask for credit card info, but is not charged).
First thing to do is set the settings to your gender and weight for accuracy. Note that females have fewer enzymes to break down alcohol and certain races have even less. Check Wikipedia or GOOGLE for this information.

Open the app, and when it says `take a reading', a clock appears and gives you one minute to prepare. Simply `BLOW NOW!' by taking a steady deep blow into the analyzer while watching the eight blue bars fill up - then you stop. There is a slight `click'. The test results are shown on your phone via a large number, such as 0.004 (which means it is likely you are very sober). Click 'OK' and you are shown a `graph' that indicate the times between `blows' and your alcohol level. 0.08 is legally drunk and you should test again in fifteen minutes.

There is also an option to get a "Dose-Specific Effect" of your alcohol level with suggestions. It is also very important to wait at least fifteen (15) minutes to test after your last drink, cigarette or food consumption.
You can `tag' a drink for future use in the computer storage, like a beer, glass of wine, liquor, etc. You can add a photo of that time period (although this would be more appropriate if you were at a party sharing the device and getting a shot of a 0.
Read more ›
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Verified Purchase
Works as described as well as working great with my Android device (Samsung Galaxy S3) It comes with three mouth pieces but not necessary but recommended if multiple people will be using for sanitary reasons. One thing it doesn't really talk about in item description is occasional maintenance is required which includes mailing it to the company for calibration. I have not had to do his yet so can't comment on that process but thought it important to know when buying. I do like that they care about its accuracy which is what I was most concerned with in the purchase.
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