Free on Google Play · Android
The drink tracker and BAC calculator built for adults
Log drinks, monitor your blood alcohol content in real time, and set your own limits. All data stays on your device. No account required.
Log drinks, monitor your blood alcohol content in real time, and set your own limits. All data stays on your device. No account required.
Drink Buddy keeps it simple — log, track, stay in control.
Log beers, wines, spirits and cocktails in one tap. Customise your favourites or add your own.
Know exactly where you stand. Uses the Widmark formula — the same method used in medical and legal contexts — calculated from your weight and gender.
See exactly when you'll be back at 0.00 or 0.05. Optional push notifications so you don't have to keep checking.
Review your drinking history with weekly, monthly and yearly charts. Every drink logged, every timestamp recorded.
Set your own daily and weekly standard drink limits and get notified when you're approaching them.
Designed for night use. Dark mode is built-in — no squinting at a white screen at midnight.
No account, no sign-up. Just download and go.
Install Drink Buddy from Google Play. No account required — ever.
Enter your weight and gender for accurate BAC calculations. Stays on your device.
Tap a drink to log it. Watch your BAC update in real time as the night progresses.
Check your limit, see your sobriety timer, and make informed choices all night long.
Everything you need to know before you download.
Yes. The free version is ad-supported. A paid version is also available which removes ads entirely.
No. Drink Buddy requires zero sign-up. All your data is stored locally on your device — nothing is shared or uploaded.
Drink Buddy uses the Widmark formula, which is the scientifically validated method used in medical research and legal blood alcohol estimation. Results are estimates — individual metabolism varies.
Yes, Drink Buddy is currently available on Android via Google Play.
The free version covers everyday tracking — logging drinks, BAC estimates and your recent history. Premium removes all in-app advertisements and unlocks extra features: graphs and analytics, unlimited drink history (free shows the last 30 days), export and import of your drinking data, and custom drinks.
No. Drink Buddy is intended for adults aged 18 and over. It is a drink tracking tool — not a product that promotes alcohol consumption.
Free calculators and guides to help you drink smarter.
Yes — a little, and only for a while. How alcohol affects platelets and clotting, why heavy drinking reverses it, and why mixing it with blood thinners like warfarin is risky.
Spring carnival is one of the longest drinking days of the year. The standard-drink maths of champagne and beer cups, the top-up trap, a pacing plan, and how to get home safe.
A 750ml bottle of champagne or sparkling is about 7 standard drinks, and a topped-up flute is over one. The formula, a table by type, and why bubbles are so easy to undercount.
Alcohol headaches come in two forms — one within hours, one the next morning. The role of dehydration, congeners, histamines and acetaldehyde, why red wine is the worst, and how to avoid one.
The red face some people get from drinking is the alcohol flush reaction — a build-up of acetaldehyde your body can't clear. What causes it, and why it's a warning sign worth heeding.
Yes — but tolerance only changes how drunk you feel, not your BAC or your reaction times. How it builds in the brain and liver, and why "I feel fine" is the trap.
Why a big night can set your heart racing or fluttering, the science of "holiday heart" atrial fibrillation, and when a racing heartbeat is an emergency.
Signing up for a dry October? Here's the science-backed timeline — better sleep, lower blood pressure, less body fat — and how to make the 31 days stick.
The same drinks hit harder as you get older — less body water, a slower liver and medications all raise the risk. Why it happens, and how to drink more safely.
A one-litre stein of Festbier is nearly five standard drinks — more than a whole day's limit in one mug. The maths, and how to pace a big day at the tents.
How blowing into a box reveals your blood alcohol — the 2100:1 ratio, fuel cell sensors, mouth alcohol, and why nothing but time gets you under the limit.
Drinking more the morning after only postpones a hangover — here's the science of why it feels like a cure, and what actually helps.
Altitude doesn't raise your BAC — but low cabin oxygen, dry air and fatigue make drinks feel stronger, and a 2024 study shows sleeping on them hits harder.
Sugary mixers spike it, but alcohol itself lowers it — and can trigger a delayed hypo hours later. What that means for you, and especially if you have diabetes.
Alcohol is nearly as energy-dense as fat and pauses fat-burning while your body clears it. How drinking drives weight gain, and how cutting back helps.
Alcohol is a Group 1 carcinogen linked to at least seven cancers. How it damages your cells, which cancers, and why there's no safe level.
Backyard stubbies and generous home pours add up faster than you'd think. The standard-drink maths, a pacing plan and how to get home safe.
Most of Europe matches Australia's 0.05, but some countries are zero-tolerance and the UK is 0.08. A country-by-country guide for driving abroad.
"Non-alcoholic" can still mean up to 0.5% ABV. What the label really means, how it compares to a standard drink, and what it means for driving and pregnancy.
Blacking out isn't passing out — your brain simply stops recording. Why memories vanish, the BAC where blackouts start, and how to avoid them.
Mostly a myth — but metronidazole, tinidazole and Bactrim are a hard no. Which antibiotics really react with alcohol, and how long to wait.
Cutting back doesn't mean quitting. Set a limit, pace yourself, alternate with water and plan alcohol-free days — the simple, evidence-based habits that actually work.
Confusion, slow breathing, cold or blue-tinged skin, can't be woken — the warning signs of a life-threatening emergency, and exactly what to do while you wait for an ambulance.
A heavy session can cut post-workout muscle repair by up to a third, plus dehydration and wrecked sleep. How drinking affects training — and how to limit the damage.
The caffeine won't lower your BAC or sober you up — it just leaves you a 'wide awake drunk'. Why the combination makes you drink more, and how to stay in control.
Your liver clears about one drink an hour — drink faster and damage begins. The three stages from fatty liver to cirrhosis, and what's still reversible.
Yes — alcohol is a diuretic that suppresses the hormone keeping water in. The science, how much fluid you lose, and how to stay hydrated when drinking.
Full-strength beer is back at the grounds — and the cups are bigger than a stubby. The standard-drink maths of game day, plus pacing tips and getting home safe.
Yes — and the effect builds with every extra drink. How alcohol lifts your BP, the dose-dependent numbers, and how much cutting back brings it down.
Why a few drinks calm you at night then leave you anxious the next day — the GABA-glutamate rebound behind 'hangxiety' and how to manage it.
50mg for experienced drivers, 20mg for learners and professionals — the breath limits, fixed-penalty and court bands, and what it means in standard drinks.
0.05 for full licences, zero for L and P-platers — the national limits, penalty ranges by BAC, and why no number of drinks is truly safe.
Drink for drink, women reach a higher blood alcohol level than men — here's the biology, and what it means for pacing and driving.
Pot, schooner, pint or can — see how many standard drinks each beer really holds, by size and strength.
A 30ml nip is one standard drink — but doubles, home pours and pre-mix cans are often far more.
Enter any drink's size and strength to see exactly how many standard drinks it contains — plus a chart of common Aussie drinks.
How fast your body actually clears alcohol, a sober-up time calculator, and the myths (coffee, cold showers) that don't work.
How to use drink tracking to make your alcohol-free month stick — baselines, streaks, Golden Tickets and life after July.
Why a nightcap helps you fall asleep but wrecks your rest — REM suppression, the 3am rebound, and how to sleep better.
0.08% everywhere except Utah's 0.05% — the limits for commercial and under-21 drivers, and why you can be arrested below the number.
Espresso martinis, margaritas and negronis are all around two standard drinks — here's how to count what's really in your glass.
One unit is 10ml of pure alcohol, a large wine is 3.3 of them — how to count units, the 14-a-week guideline and UK drink-drive limits.
Up to 24 hours, peaking as your BAC hits zero — the science of acetaldehyde, congeners and dehydration, and why no cure actually works.
No more than 10 standard drinks a week and 4 on any day — where the NHMRC numbers come from, and why most serves count as more than one drink.
Nine hours of free-flowing champagne is a trap — the top-up trick, toast etiquette, and a pacing plan that gets you to the last dance.
Alcohol packs 29 kJ per gram — nearly as much as fat. What beer, wine and spirits really cost in kilojoules, and how to cut back without quitting.
250mcg breath, 50mg blood, zero under 20 — New Zealand's two-tier penalty system explained, from $200 infringements to criminal charges.
Sleep doesn't sober you up — your liver clears about one drink an hour, awake or not. The morning-after maths that keeps you under 0.05.
Heat, 10-hour days and lost count — why festivals hit harder than a night out, with a pacing plan, hydration rules and can-by-can counts.
0.08 is criminal, but most provinces suspend licences from 0.05 — Canada's two-limit system, mandatory screening and zero-tolerance rules.
Why the same drinks hit harder with no food — how a meal slows absorption and lowers your peak BAC, and the one thing eating can't do.
A 750ml bottle is about 7–8 standard drinks, not three glasses — the simple formula, a table by ABV, and why home pours add up so fast.
Detection windows for breath, blood, saliva, urine (EtG) and hair tests — hours to days to months — and why nothing clears it faster than time.
Download Drink Buddy free on Google Play. No account. No fuss.
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