# BACtrack vs Smart Sense BAC Breathalyzer

The clearest difference is in-app purchases: Smart Sense BAC Breathalyzer at none against BACtrack's 2. Smart Sense BAC Breathalyzer also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). BACtrack's advantage is ads (none vs shown) and ratings volume (1.5K vs 2). On price, rating and update cadence there is nothing between them.

Both are free to download. BACtrack sells 2 in-app purchases, starting at $39.99 per year. Smart Sense BAC Breathalyzer asks for nothing beyond the download.

BACtrack holds the better App Store score, 4.2 against 4.0. That said, the two scores are not equally well evidenced: BACtrack has 1.5K ratings behind it against 2, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | BACtrack | Smart Sense BAC Breathalyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (1.5K ratings)](https://appshunter.io/ios/app/bactrack/id553347498/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/smart-sense-bac-breathalyzer/id6443985055/reviews) |
| Number of ratings | **1.5K** | 2 |
| Positive reviews | 26.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 58 MB | 73 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [KHN Solutions Inc](https://appshunter.io/developer/553347501) | [ReFleX Wireless Inc.](https://appshunter.io/developer/666581212) |

## What reviewers say

### BACtrack

[App page](https://appshunter.io/ios/app/bactrack/id553347498)

Estimate your Blood Alcohol Content (BAC) using a compatible smartphone breathalyzer. Track your readings over time, understand impairment levels, and estimate when your BAC will return to zero. Integrates with Apple Health for a comprehensive view of your drinking habits.

**Highlights:** Estimate BAC levels, Connects via Bluetooth, ZeroLine® BAC estimation, Track drinking habits, Apple Health integration, Safety information

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BACtrack+ | $39.99 | per year |
| BACtrack+ | $39.99 | per year |

**What reviewers like**

- 💡 Helpful yardstick
- 🚀 Works as expected
- 👍 Great product

**What reviewers complain about**

- 🐛 App crashes or doesn't work
- 🔋 Battery issues
- 🔒 Privacy concerns with required account
- 👎 App updates make it worse
- 👎 Inconsistent or inaccurate readings

**Reported bugs**

- App won't get past registration screen
- Firmware update issues
- Bluetooth connectivity problems
- App crashes or freezes

**Requested features**

- Bring back Apple Watch app
- More drink options
- Countdown timer for blowing
- Ability to add custom drinks
- Battery level indicator


### Smart Sense BAC Breathalyzer

[App page](https://appshunter.io/ios/app/smart-sense-bac-breathalyzer/id6443985055)

This app works with a connected USB breathalyzer device to provide instant, accurate alcohol level readings. It's designed for responsible drinking, offering a portable solution for safety and control. Optional features include taking a selfie with your test results for easy sharing.

**Highlights:** Instant BAC readings, Connects to USB breathalyzer device, Portable and pocket-sized, Optional selfie with results, Easy sharing of test results

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BACtrack free?

BACtrack is free to download, with in-app purchases available.

### Is Smart Sense BAC Breathalyzer free?

Smart Sense BAC Breathalyzer is free to download, with no in-app purchases.

### Which has better reviews, BACtrack or Smart Sense BAC Breathalyzer?

BACtrack is rated higher. BACtrack averages 4.2 out of 5 from 1.5K ratings, while Smart Sense BAC Breathalyzer averages 4.0 from 2 ratings.

### Do BACtrack or Smart Sense BAC Breathalyzer have ads?

Smart Sense BAC Breathalyzer shows ads; BACtrack does not.

### Which is updated more often, BACtrack or Smart Sense BAC Breathalyzer?

BACtrack ships an update fortnightly, and Smart Sense BAC Breathalyzer fortnightly. Most recently, BACtrack was updated on November 6, 2026 and Smart Sense BAC Breathalyzer on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*