Alcohol unit tracker & limit
Vesper is a one-tap alcohol tracker. Count your drinks for the night, see how you're tracking against a limit you set, and review how it adds up over time. It's built for people who still enjoy a drink and want to keep an eye on it, not quit.
Set a unit limit before you go out, then tap the big plus button each time you have a drink. The first drink starts a session automatically and it closes itself once the night winds down.
Tap the plus button for each drink. Vesper keeps the count and draws a fluid gauge.
Watch the gauge fill against the limit you set, with a live estimate of what's still active.
One tap notes how you woke up: rough, okay, or good. Connect how you felt to how much you drank.
This week at a glance for free: units, nights out, and how often you stayed under your limit.
Pick how firmly the app reacts as you approach your limit. No mode ever blocks logging — Vesper records the night as it actually happened.
Every surface shows the same session, whichever device logged the drink.
Opt in and your drinks are saved as alcoholic-beverage records you own. Delete a drink and the record goes too. With Pro, you can also let Vesper read your sleep and resting heart rate to show how a heavier night lands the next morning. It reads only those two, only with your permission, and works fully without any of it.
VESPER PRO
Logging, the gauge, the live estimate, the Watch app, widgets, and the Live Activity are all free. Pro adds longer-term insights and personalization, available as a lifetime purchase or a monthly or yearly subscription.
Full long-term trends, your tipping point, heaviest weekdays, drink-free streaks, and Apple Health correlations.
Recolour the whole evening with gauge themes: Classic gold, Sunset, Ocean, Forest, and Mono, with more looks to come.
Every night you've logged, not just the last few, so you can see how your drinking changes over months.
The “still active” number models steady clearance at roughly one unit per interval you set. It is not blood alcohol content: it doesn't account for your weight, food, or how large the pours actually were, and it can't tell you whether you're fit to drive.
No. Vesper is for people who still enjoy a drink and want to stay in control of it, not stop. There are no streaks to protect and nothing to feel guilty about. It just keeps an honest count and helps you notice your own patterns.
No, and it will never pretend to be. The "still active" number is a rough estimate based on time, not a blood-alcohol reading. It knows nothing about your weight, your dinner, or how heavy the pours were, so it can never tell you that you're fit to drive. Only time and a clear head can.
Yes. Everything lives on your device, nothing ever leaves it. Apple Health is entirely optional and if you turn it on, your drinks are saved as records in Health (Alcohol Units type).
No. Vesper works fully on iPhone on its own. If you do have a Watch, you get a native app with the same one-tap logging, plus widgets, a Live Activity, and Siri.
The part that matters on a night out is free forever: logging, the gauge, the live estimate, the Watch app, widgets, and the Live Activity. Vesper Pro is an optional upgrade for longer-term insights and a few personal touches, as a monthly, yearly, or one-time purchase.
FOR PRESS
There's a press kit with information about the app and screenshots and icons ready to download. Or just email [email protected].
Track tonight, and see how your drinking adds up over time.
