BACtrack vs St. Gregory Alumni
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BACtrack
Turn your iPhone into a breathalyzer with this app. It connects wirelessly to compatible devices to estimate your Blood Alcohol Content (BAC) and provides safety information. Track your drinking habits and understand how alcohol affects your body to make informed decisions.
- Estimate Blood Alcohol Content (BAC)
- Connects wirelessly via Bluetooth
- Displays BAC results on iPhone
- Provides safety information on impairment
- ZeroLine® estimates BAC return to 0.00%
- Save BAC readings to track habits
- Integrates with Apple Health
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Transform your iPhone into a breathalyzer with BACtrack®! Enjoy a modern design, easier navigation, and a smoother overall experience with a lot more updates to come. Easily estimate your BAC (Blood Alcohol Content) with a BACtrack smartphone breathalyzer and this free companion app. Designed by BACtrack, the leading manufacturer of personal and professional breathalyzers, this app connects to your device wirelessly via Bluetooth®, and allows you to measure your alcohol level with the award-winning BACtrack Mobile, BACtrack C6, and BACtrack C8 smart breathalyzers. BACtrack makes it easy to understand how alcohol affects the body, empowering you to make smarter, more informed decisions. In this version of the BACtrack app: • Pairing is automatic once you turn on your BACtrack and open the app; results are communicated via Bluetooth® to display on your iPhone. • Quickly and easily estimate your BAC and read safety information about corresponding impairment levels. • ZeroLine® estimates when your BAC will return to 0.00%. • Saved BAC readings allow you to get a clear picture of your drinking habits. • Track your BAC data using Apple Health. The most trusted brand of breathalyzers on the market, BACtrack has been featured in Fast Company and CNET. Download now and test your BAC anywhere, anytime!
St. Gregory Alumni
Connect with peers and coaches for support and updates throughout your recovery journey. Access daily inspirations, recovery content, and participate in discussions. Join virtual events and control your shared information within a private community.
- Real-time posts for alumni connection
- Daily inspiration messages
- Recovery content (videos, podcasts, articles)
- Discussion forums on recovery topics
- Virtual event participation
- User-controlled privacy settings
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Share updates, ask questions, support others, and stay connected with others throughout your recovery. This community is a tool to help you in recovery and receive support when you need it the most. Connect with: * Peers and coaches to share updates, ask questions, and offer support. * Your recovery program to receive inspirations, updates for onsite events, and ways to be involved. Key Features: * Real-time posts: This private group allows you to stay connected to fellow alumni in real-time. * Daily inspirations help to center your thoughts and actions. * Recovery Content: Explore videos, podcasts, and articles to help you as progress in your recovery. * Discussions are a way for you to share your voice and inspire others on recovery topics. * Join virtual events directly from the app * Privacy: You control what information you share. For clients of St. Gregory, you will be added to a private group consisting of peers.
Screenshots
Verdict
The clearest difference is rating: BACtrack at 4.1 against St. Gregory Alumni's 3.2. BACtrack also leads on update cadence (fortnightly vs every 5 months) and ratings volume (1.4K vs 5). St. Gregory Alumni's advantage is in-app purchases (none vs 1) and review sentiment (50% vs 27%). On price and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. BACtrack sells 1 in-app purchase, starting at $39.99 per year. St. Gregory Alumni asks for nothing beyond the download.
BACtrack holds the better App Store score, 4.1 against 3.2. That said, the two scores are not equally well evidenced: BACtrack has 1.4K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 27% of BACtrack's written reviews are positive against 50% of St. Gregory Alumni's, so the app with the better star average is not the one people write more warmly about.
BACtrack ships an update fortnightly, St. Gregory Alumni every 5 months. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.
| Parameter | BACtrack | St. Gregory Alumni |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (1.4K ratings) — better | 3.2 (5 ratings) |
| Positive reviews | 26.9% of reviews | 50.0% of reviews — better |
| Number of ratings | 1.4K — better | 5 |
| Update frequency | Fortnightly — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 130 MB | 33 MB |
| Age rating | 17+ | 12+ |
| Developer | KHN Solutions Inc | Summit Behavioral Healthcare |
Customer experience
BACtrack
St. Gregory Alumni
Bugs and requests
BACtrack
Reported bugs
4 issues- App won't get past registration screen
- Firmware update issues
- Bluetooth connectivity problems
- App crashes or freezes
Requested features
6 requests- Bring back Apple Watch app
- More drink options
- Countdown timer for blowing
- Ability to add custom drinks
- Battery level indicator
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- Improved history tracking and data management
St. Gregory Alumni
Not enough reviews yet to summarise bugs or requests.
In-app purchases
BACtrack
- BACtrack+1 Month trial$39.991 Year
St. Gregory Alumni
No in-app purchases
Questions
Is BACtrack free?
Is St. Gregory Alumni free?
Which has better reviews, BACtrack or St. Gregory Alumni?
Do BACtrack or St. Gregory Alumni have ads?
Which is updated more often, BACtrack or St. Gregory Alumni?
Other comparisons
