Comparison

BACtrack vs Shaterian

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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!

About

Shaterian

Features
Read full description

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. Take as long as you like. ASK ABOUT YOUR OWN LIFE Ask a question out loud or type it. Shaterian answers from what you have actually told it, and shows you which memories the answer came from. When your own memories 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 that run through them. Follow a thread, open a cluster, or see where a memory happened on a map. BRING IN WHAT IS ALREADY YOURS Photographs and workouts can become memories, with your permission and only the ones you choose, and your contacts help it recognise the people you mention. Your calendar and Reminders are read, never copied: ask what is on today and Shaterian tells you. 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, you confirm, and Apple's own screens do the rest. HOW YOU ARE TODAY A gentle daily check-in, a mood note, and — if it is useful to you — somewhere to log a dose and how you are feeling when you take it. A TWIN THAT LOOKS LIKE YOU Choose a photograph and Shaterian builds a quiet three-dimensional likeness that takes its colouring from you. If you choose, it can also take the shape of your face with the front camera, once, to build the head. That shape stays on this iPhone, is never sent anywhere, and is deleted the moment you remove it. 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, high-contrast palette. PRIVACY, PLAINLY There is no account to create and no password to remember. Signing in with Apple is optional: it tells the app your name, and the first time it switches on Sync with iCloud. 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. Where your iPhone cannot turn speech into text itself, Apple's speech service does. Nothing is sold, nothing is used for advertising, and nothing is 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

BACtrack4 screens
Shaterian4 screens

Verdict

The call

The clearest difference is update cadence: Shaterian at daily against BACtrack's fortnightly. 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

CostPrice · In-app purchases · Ads · Monetization

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 $2.29 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

BACtrack ships an update fortnightly, Shaterian daily. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

Scorecard1 real difference · 9 level
BACtrack versus Shaterian: the parameters behind the verdict, then further details
ParameterBACtrackShaterian
PriceFreeFree
Rating4.1 (1.4K ratings) — better—
Positive reviews26.9% of reviews—
Number of ratings1.4K — better—
Update frequencyFortnightlyDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS17.617.0 — better
Further details — not scored
Size130 MB56 MB
Age rating17+12+
DeveloperKHN Solutions IncFab Lab Connect

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
Show 1 more
  • Improved history tracking and data management

Shaterian

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

BACtrack

Subscriptions1
  • BACtrack+1 Month trial$39.991 Year
1 purchases

Shaterian

Subscriptions1
  • Shaterian Monthly14 Days trial$2.291 Month

Questions

Is BACtrack free?
BACtrack is free to download, with in-app purchases available.
Is Shaterian free?
Shaterian is free to download, with in-app purchases available.
Do BACtrack or Shaterian have ads?
Neither BACtrack nor Shaterian shows ads.
Which is updated more often, BACtrack or Shaterian?
BACtrack ships an update fortnightly, and Shaterian daily. Most recently, BACtrack was updated on October 13, 2026 and Shaterian on October 14, 2026.

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