BACtrack vs Shaterian
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!
Shaterian
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Shaterian is a quiet place for your memories, your days, and how you are feeling. It was made for older adults and for people living with Parkinson's, and it is built on one idea: what you tell it is kept on your iPhone. It is not a medical device and does not diagnose or treat anything. SPEAK, AND IT IS KEPT Tap once and talk. Your words are turned into text, tagged, and filed for you. There is nothing to organise and no forms to fill in. ASK ABOUT YOUR OWN LIFE Ask out loud or type. Shaterian answers from what you have told it and shows which memories the answer came from; when they do not hold the answer, it says so rather than making something up. A LINE IT WILL NOT CROSS Questions about diagnosis, dosage or whether to change a treatment are recognised and turned back to your own care team rather than answered by a model. SEE HOW YOUR LIFE CONNECTS Your memories appear as a constellation of the people, places and themes in them, and on a map. BRING IN WHAT IS ALREADY YOURS Photographs and workouts can become memories, only the ones you choose, and your contacts help it recognise the people you mention. Your calendar and Reminders are read, never copied. ASK IT TO DO THINGS Set a reminder or a routine for your pills, call or message someone, put an appointment in your calendar — it proposes and you confirm. Reminders and routines arrive as notifications; calls, messages and calendar entries finish on Apple's own screens. HOW YOU ARE TODAY A question about your life each day, a mood note, and, if it helps, somewhere to log a dose and how you feel when you take it. A TWIN THAT LOOKS LIKE YOU Choose a photograph and Shaterian builds a quiet 3D likeness coloured from it. If you choose, the front camera takes the shape of your face, once; that shape stays on this iPhone, is never sent anywhere, and is deleted the moment you remove it. YOUR CIRCLE Invite the people who look after you with a link. In the Shaterian Caregiver app they see your routines, when you take your pills, and only the memories you choose, and they can suggest a reminder, which waits for your yes. You can stop at any time. MADE TO BE USABLE Type that grows with your iPhone's own text size, up to half again as large. Generous targets for unsteady hands, and a calm palette, in dark or light. PRIVACY, PLAINLY There is no account and no password. Signing in with Apple is optional and tells the app your name. Your memories, your health notes and your photograph are held on this iPhone. There is no server of ours. Sync with iCloud keeps your memories — only your memories — in your own iCloud and in step across your iPhones, and it stays off until you turn it on or sign in. What you share with your circle reaches them through your own iCloud, encrypted, never through a server of ours. Where your iPhone cannot turn speech into text itself, Apple's speech service does. Nothing is sold, used for advertising, or used to train anything. TWO WEEKS FREE, THEN $2.99 A MONTH Shaterian is free for two weeks, then $2.99 a month (or the equivalent in your currency), charged to your Apple Account and renewing each month until you cancel — in Settings › your name › Subscriptions, at least 24 hours before the period ends. Your memories stay on your iPhone whatever you decide, and you can see and remove them from the app without subscribing. Privacy Policy: https://privacy.shaterian.com/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ MEDICAL DISCLAIMER Shaterian is not a medical device. It does not diagnose, treat or give medical advice, and it is not a substitute for your doctor, nurse or specialist. Always seek the advice of your doctor or care team before making any medical decision, including about medication, and use this app in addition to their care, not instead of it. The general health information in the app comes from Parkinson's UK, the Parkinson's Foundation and the NHS, and every source is listed inside the app.
Screenshots
Verdict
The clearest difference is review sentiment: Shaterian at 100% against BACtrack's 27%. Shaterian also leads on rating (5.0 vs 4.2) and update cadence (every 2 days vs every 2 weeks). BACtrack's advantage is ratings volume (1.5K vs 1). On price, ads, in-app purchases and device support 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 and Shaterian sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Shaterian holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: BACtrack has 1.5K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 27% of BACtrack's written reviews are positive against 100% of Shaterian's.
BACtrack ships an update every 2 weeks, Shaterian every 2 days. Both last shipped on October 29, 2026.
| Parameter | BACtrack | Shaterian |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (1.5K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 26.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 1.5K — better | 1 |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 81 MB | 57 MB |
| Age rating | 17+ | 12+ |
| Developer | KHN Solutions Inc | Fab Lab Connect |
Customer experience
BACtrack
Shaterian
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
Shaterian
Not enough reviews yet to summarise bugs or requests.
In-app purchases
BACtrack
- BACtrack+1 Month trial$39.991 Year
Shaterian
- Shaterian Monthly14 Days trial$2.991 Month









