Chance gave you a great evening with strangers. The Social tab is there so it doesn't end there: get the group back together, plan the next outing, keep your crowd in one place, and find people around you.
During the evening your phones crossed paths, as they always do. The next day, you simply say when it was. The app shows you the people you crossed paths with during that time range: you tick the ones from your evening, and each of them gets an invitation.
Nobody had to take out their phone on the spot, or swap numbers.
Screens shown in French. The app is available in English and 29 other languages.
You pick a range, the app gives you people — never the exact time of a crossing, nor the place. It cannot be used to piece together someone's schedule.
A gang is created with at least two guests — three people including you. It's for getting a group back together; for one person in particular, there's the like.
Invited people see the host, the members and the other pending invitations. If one of them declines, they leave the list: only the host and the person who invited them know that they declined.
How far back can you go? The app offers today, yesterday and the day before yesterday, but the search goes no further than your plan's visibility window: about a day and a half on a free account, several days on a paid plan. Best to get the gang back together the very next day.
Here, your usual search filters don't count: you find everyone you crossed paths with during the range, including people your age or gender criteria keep out of your encounters list. An evening with friends isn't a search for a partner.
A name, a date, a place dropped on the map. Each invited person answers “I'm going”, “Maybe” or “No thanks”, and can change their mind. The event has its own discussion and its polls. One week after it starts, it is erased, along with its discussion — private or public alike.
How many people? A public event, like a public group, holds the number of people — attendees and invitees included — of the tier chosen when paying: the app asks “How many people?” and shows the price of each tier. The tiers and their prices are set by the team, and some may be free. The event's page then says “Up to N people”; if more room is needed, its organizer taps “Expand” and pays only the difference from what they have already paid, in ProxiBlu credits.
A search by keyword and date range helps you find an event or a group again.
Frisbee in the park in an hour? Create a one-off activity, or find someone else's near you, and see who'll be there.
A precise place, a date and time between now and 7 days from now, a duration, a description, the number of people expected (20 at most), the age range and the genders you're looking for. One activity at a time, whatever your plan.
By keyword, within 10 km by default and up to 50 km, around their location or another point — if they match your criteria. They say they'll be there with one tap. Once the number is reached, the activity disappears from other people's list.
The people coming can be seen by everyone who can see the activity. Reminders 24 h and 1 h before, with “I won't come” — free until 2 h before; later, it's a late cancellation. You write in it as in an event, the creator can remove a person, and the activity is deleted 24 h after it ends.
How attendance is proven. By checking in your location at the start and at the end, through a Bluetooth encounter on site, or by the confirmation of a participant whose attendance is proven — a friend's confirmation counts for little. Everyone thus has a participant reliability (their attendance measured against their commitments, over one year), which never rests on the mere absence of a Bluetooth signal; a report can be disputed.
The organizer has their own reliability, which nobody sees as a percentage: you can only filter activities by “Reliable organizer”.
A gang brings back the people from one moment. A group is built to last: a discussion, polls, and its own events, which any member can sign up for without an invitation.
Every event, every gang, every group and every activity has its own, from the most recent message to the oldest — replies too. You write, reply to a specific message, delete your own. The host can remove a person from the space.
Friday or Saturday? One question, two to ten options, one or several answers allowed. In a private space, members see who chose what; in a public space, the vote is anonymous and only the totals are shown.
Alongside the gang you crossed via Bluetooth, there's the open gang: you set who can join, and people around who meet your criteria find it and ask to join. Free, and visible right away.
The genders accepted, the age range, a place and a radius of 1 to 50 km, the number of spots, from 2 to 100. A title and a description, visible and reviewed by automatic moderation. An introduction required to join, or not; members who can invite, or not.
Everyone finds the gangs whose criteria they meet, with the number of spots left, and asks to join — with an introduction if the gang requires one. The creator accepts or declines. A full gang no longer appears in searches.
Inside: the list of members, a discussion for members only, “Add friend” and the gang's events. You leave whenever you want, and the creator can remove someone.
An open gang isn't end-to-end encrypted. Like a public group's, its discussion can be read and moderated by the server: don't put any private information there. The gang you crossed via Bluetooth, for its part, is end-to-end encrypted.
Describe where and when, and what the person looks like. If they noted they were there and match your description, your search shows up for them — it's up to them to answer you.
A point on the map, within 50 m at most. A date and a time window of 3 hours at most. A gender, an age range of 15 years at most, one or two skin and hair colours, glasses or not, a height range of 30 cm at most. With a title and a description.
On the other side, you can note the places where you were, with the day and time. Nobody else sees them, and each one is deleted after 30 days. If a search matches you, it shows up under “Someone may be looking for you” — without the person searching knowing that you can see it.
You answer with a short request. If the person searching accepts, you join the search's group, where they can ask you to be friends. A search lasts 30 days and can be extended by 30 days on request; one at a time, whatever your plan.
The map shows the busy areas around you over the last 24 hours, from blue (quiet) to red (dense). It's the former “heatmap”, now filed under the Social tab.
The map is divided into cells about a hundred metres across. A cell is only shown if at least three different people passed through it: below that, it stays empty.
Only people who accepted geolocation count toward the map, and you need to have accepted it to view the map. Without that consent, you don't appear in it — not even in a total.
On a free account, you see the busy areas of the last 24 hours. A paid plan shows them hour by hour, over those same 24 hours, each slot named by its day (“Yesterday, from 15:00 to 16:00”): knowing when a neighbourhood comes alive, not only where.
A friend isn't a match, and doesn't need to be someone you crossed paths with. You add them by phone number or email, from the Connections tab, which brings together your matches, your friends and your contacts. You can also ask a match to be friends, or a member of an event, a gang or a private group. A friend isn't an encounter either: they don't appear in your Recent list. And your friends see your nickname, if you chose one.
You can introduce someone you crossed paths with to your friends (“Introduce to my friends”, on the encounter's profile), if that person allowed it: the “Let people introduce me to their friends” setting, behind the gear icon in the Encounters tab, is off by default. They get a request for each friend, and accepting counts as a like toward that friend. The friend then sees them under “Encounters shared with you”, in the Connections tab; if the friend likes them too, it's a match “introduced by a friend”. As for you, you never learn their answer.
A friend, on the other hand, is introduced to your other friends from their profile, with no setting: they accept or decline each one, and you see their answer. The friend you introduce them to sees them under “Friends shared with you”.
A long press on the conversation, or its ⋮ menu, then you confirm. The other person keeps theirs, and the match or friendship remains. A new message brings it back, with only what follows.
“Invite from my contacts” does not read your address book. The app asks for no permission to access contacts. It opens your phone's own picker: you tap one person, and only that person's number is sent to us — we keep nothing but a fingerprint of it. And so as not to pester someone who doesn't have ProxiBlu, only one friend invitation is ever offered to them, however many people think of them.
The “Contacts” section, for its part, is a small private notebook you fill in by hand, which stays on your phone. To link a contact to one of your friends, their number and email are compared by the server, which keeps none of it.
Not everything in the Social tab is protected the same way. Here is the exact rule, so you know what to write where.
| Space | Who reads what is written there |
|---|---|
| Private event, gang you crossed via Bluetooth, private group | Members only. Each text is checked automatically once, as it is sent, by a moderation service; it is then stored encrypted with a key our servers don't have, and we can no longer read it. We know who is a member and who answered what to the invitation; for a private event, its organizer's phone also tells us the day to erase it, one week after it starts. |
| Public event, public group, open gang | Everyone around the place for an event; members for the discussion of a group or an open gang. These spaces are moderated: our team can read them. Don't put any private information there. |
| Polls | The question and options follow the rule of their space. Votes, however, are counted by the server and are not encrypted. |
| Conversation with a friend, or a group conversation | End-to-end encrypted, like a conversation between matches; so are the name of a group conversation and the new version of an edited message. An attached photo is analyzed automatically once, before being encrypted. |
Two switches, behind the gear icon in the Social tab: whether to accept invitations to events, and to gangs, from people you crossed paths with. Your friends and matches can always invite you. Nobody knows whether you turned these off.
They block invitations, not the search: someone you crossed paths with can see you appear, with your public card, when they look for the people from their evening. They learn neither the time nor the place, and from that search all they can do is invite you.
When a search shows up under your “Someone may be looking for you”, the person searching doesn't know it: you choose whether to answer them. And the places where you were are shown to nobody.
In a spontaneous activity, the people coming can be seen by everyone who can see the activity. An organizer's reliability, on the other hand, is never shown as a percentage: you can only filter by “Reliable organizer”.
Install ProxiBlu before you go out: that evening is when it all happens.
