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Customer Ratings & Reviews

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Customer reviews

Rating 3.6 out of 5 stars with 67 reviews

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75%
would recommend
to a friend

Customers are saying

Customers commend the Vio Smartphone Keychain Breathalyzer for its ease of use and compact size, describing it as "working great" and "quite accurate for a small Bluetooth device." However, concerns are raised regarding its accuracy, with some users expressing skepticism about its reliability compared to professional breathalyzers used by law enforcement. Additionally, the battery life of the device has been criticized for draining quicker than desired.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
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Page 1 Showing 1-11 of 11 reviews
  • Pros mentioned:
    Ease of use

    Rated 4 out of 5 stars

    Love the product!

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love the product. Appears accurate and is easy to use. Although I like the fact you can use the app from your phone, I think it would be great if it also had a readout on the device where it wouldn't be required to use the app or your phone to complete the test

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Good for proof of sobreity

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Small enough to carry with you or for your son or daughter for those occasions when you are not sure you are ok to drive. Easy to connect to your phone. Test you, take a screenshot and you have proof you are clear to go.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 4 out of 5 stars

    Very good

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This product works very well for what is intended for

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 3 out of 5 stars

    Very good item

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Work Great ! Item is very eazy to use and works great.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use
    Cons mentioned:
    Accuracy

    Rated 4 out of 5 stars

    Easy tool for testing

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Quick, easy tool for testing BAC. I'm not positive how accurate it is but will give at least a rough idea.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Excellent portable breathalyzer

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very portable and easy to use. Can be attached to your keychain.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Great Breathalyser

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Easy to use and great that it marks the reading with a time and date stamp.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 4 out of 5 stars

    Great gadget

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought this for my daughter and she loves it...works great and easy to use!

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Better safe than sorry

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    We got this for our trip to Scottland, lots of scotch drinking. We had a great time using it and it's easy to use. Feel like it helped to judge if driving was ok or if we needed to wait a little bit.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Size

    Rated 5 out of 5 stars

    Great tool to have if you drink.

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very cool device to own. Super small, fits on my Keychain and works with my iPhone. Its easy to use, seems very accurate and way less expensive than getting into trouble. I think everyone who goes out drinking should have a breathalyzer like this.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Perfect

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    My son surprise tested me after thanksgiving dinner last week, right when i was walking out the door. Thank god he did. I was way too hammered to drive home. Didn't even know it. Double bypass surgery or no, I'm keeping this thing on me. I just bought one myself and now I plan on testing myself everytime i drink. No more drunk driving Dad.

    I would recommend this to a friend