PromilMeter
You know how many drinks. Know your BAC too.
Log your drinks and PromilMeter shows your estimated blood alcohol concentration in real time, based on your weight and sex. It warns you as you approach the legal limit and estimates when you will be sober.
Free · No ads · Data stays on your phone
Example display. Values are estimates.
Your BAC in three steps
The calculation uses the Widmark formula: the alcohol you have had, your body weight, a distribution factor based on sex, and the time since you started drinking.
Set up your profile
Age, sex and weight. Enter them once and they are ready for every night out.
Add your drinks
Pick from the catalog: beer, wine, rakı, vodka, whisky, gin. Or enter the volume and alcohol percentage yourself.
Watch your BAC
The value updates in real time. You get a warning near the 0.50‰ limit and an estimate of when you will be sober.
Everything you need for a night out
Real-time BAC
A Widmark calculation for your weight and sex. The color-coded gauge shows your level at a glance.
Log drinks in seconds
A ready-made drink catalog with search. Not listed? Enter the volume and alcohol percentage by hand.
Legal limit warning
Warns you before you reach the 0.50‰ limit.
Time-to-sober estimate
Shows roughly when your body will have cleared the alcohol.
Session history
See past nights by month and review the BAC chart of each session.
No account, no ads
Use it without signing up. No ads, analytics or tracking.
Your data never leaves your phone
Your profile, drinks and history are stored only on your device. The app does not connect to a server, and deleting the app deletes the data.
An awareness tool
The values shown are estimates, not medical advice or a legal measurement. Do not drink and drive. Always make sure you are below the legal limit before driving.
Questions
Is PromilMeter free?
Yes. It is free to download and has no ads.
How accurate are the values?
They are estimates from the Widmark formula. Food, health and your own metabolism change the real value. The app does not replace a breathalyzer or medical advice.
Where is my data stored?
Only on your phone. The app sends no data to any server. If iCloud Backup is on, iOS may include app data in your Apple backup.
Do I need an account?
No. You only enter your profile details in the app.
Which devices are supported?
iPhone and iPad with iOS 26.2 or later. The app is available in English and Turkish.
Know before the night ends.
Free · iPhone and iPad