Share what you're drinking — and who you're drinking it with.
Erwein is an app for people who like drinking in company. Capture what's in your glass, show your friends the place you're sitting in, and raise a glass with them — even when they're somewhere else entirely.
Requires iOS 27 and Apple's free TestFlight app.
What Erwein does
Replies
You share your drink, someone replies with a photo of their own glass — and that becomes a conversation between the two of you. Even with people who are somewhere else entirely.
Your people
Find the people you already drink with — through your contacts or your personal link. Recurring company becomes a circle you can look after, rather than one left to chance.
Your crews
The flatshare, the regulars' table, the club: a crew is a named group with a mark and a place of its own. Everything its people file lands in one feed, so the evening keeps its shape without anybody organising it.
Discover places
See where glasses are being raised right now and find spots near you. Every place carries what has been drunk there — by you and by others.
Your journal
What you drank, day by day. And by week, month or year: your most frequent places, what you like drinking most and at what time of day. Not a score, but a memory for evenings you'd otherwise forget.
What's in the glass
Every drink comes with background right inside the app: origin, grape or brewing style, serving temperature, and how to tell quality.
What can be in the glass
Erwein knows nine categories, each with its own colour. Alcohol-free sits among them as an equal, not as a footnote.
- Beer
- Wine
- Spirits
- Liqueurs
- Cocktails
- Alcohol-free
- Coffee
- Tea
- Other
All of them come with background reading inside the app — the FAQ covers what else Erwein does.
More than what's in the glass
Your mood tonight. After posting, you can add how you feel to your drink: five flames say how the evening is going for you. Your mood shows on your post, and it ends with the night: at six in the morning it stops being current, whether you open the app or not.
Music that belongs to the evening. After posting, you can also add music from Apple Music to your drink, and whoever sees it can play it. A list you put together can be saved to your own Apple Music library. Picking songs works without a subscription; playing them in full and saving a playlist needs one.
Crews. The flatshare, the regulars' table, the club: a crew is a fixed group with its own feed. Everyone in it can invite someone or accept a request to join; admins can remove members, and you can leave whenever you like.
The glass recognises itself. Once the photo is taken, Erwein offers what it believes is in it — the label, the family, the drink. That happens on your device using Apple's on-device model; the picture is not sent anywhere for it, and the suggestion stays a suggestion until you tap it.
What this is really about
Erwein is built around the moment someone lifts their glass. You photograph what you're drinking and say where you are. Your friends see it and reply with their own glass — and you get talking, even when they're nowhere near your table. The ones who keep turning up become your regular company, and Erwein helps you keep that circle alive instead of leaving it to chance. And even with no friends in the app yet, you still have your journal: what you drank, where and when.
Erwein is not a review site and not a collector's album. It's the answer to the question of who you last raised a glass with.
Erwein is for adults. The app contains references to alcohol and is rated 17+. If you don't drink you're just as welcome — a glass of coffee, lemonade or water works exactly the same way.
Questions?
The FAQ page answers the common ones. If yours isn't there, use the contact form or write to support@erwein.app.