blip
Anonymous local hazard map · iOS

Some streets feel wrong.
Now they're on a map.

The light that's been out for a month. The underpass nobody walks twice. Blip is where neighbours put those places — with no account, no name, and nothing that leads back to whoever said it.

In development · not released yet

Reporting a spot: six tags and an optional note.
The Blip map at night: soft glows over reported areas, each with a pill naming what people reported there.
The app

Four screens. That's all of it.

No feed to scroll, no profile to fill in, no badge on the icon asking for you back. Open it, look, close it.

The map with reported areas glowing.
01Open it and look Brighter means people keep coming back to the same spot, not that something happened once. Nothing is ever green: no map can promise you safe.
Choosing tags and writing an optional note.
02Say what it's like Six tags, every one about a place rather than a person. Write a note if you want to — nobody else will ever read it.
An area with four reports and a breakdown of what people reported.
03An area, never a doorway Reports round to a small area, so the map points at a stretch of street instead of somebody's front door.
Your reports, grouped by whether they are waiting to send or on the map.
04Yours stay yours Say it's still bad, mark a light fixed, or take it back entirely. Places fade on their own once people stop reporting them.
Privacy

Blip never asks who you are.

No account, no email, no phone number — not at sign-up, because there is no sign-up. So there is nothing to sell, nothing to leak, and nothing to hand over when somebody asks.

0accounts, emails or phone numbers
0trackers, analytics or ad identifiers
30days before a report is deleted
100 mthe smallest area a report can point at
What a report carries
The area, the tags you chose, your note and the time. Not your name, because there isn't one.
Where you are
Checked once, roughly, to make sure you're near the place you're reporting — then thrown away. The app has no background location permission at all.
What others see
How often an area is reported and which tags people picked. Never your words, never who reported.
How spam is stopped
Your iPhone proves it's a real device with a random key from Apple. We keep a scrambled copy so we can slow down abuse. It isn't your Apple Account and it isn't a name.
Questions

The things people ask first.

Why is nothing on the map green?

Because nobody reports the street where nothing happened. A blank stretch means unreported, and treating that as "safe" would be a claim the data cannot support. Colour only ever means people reported here.

Can somebody be reported?

No. Every tag describes a place or something that happened there — poor lighting, theft, a bad walkpath. There is no way to describe a person, and that is deliberate: a map of people someone found unsettling is a different app, and a worse one.

What happens to what I write?

Your note is never shown to another person. It helps decide how an area is described in aggregate, and it's deleted with the report after 30 days. Other people see counts and tags, nothing else.

If there's no account, what stops abuse?

Your iPhone proves it's a real device using Apple's App Attest, which gives a random key per installation. That key can be slowed down or blocked if it's used to spam the map, and it survives a reinstall — but it isn't tied to your Apple Account and tells us nothing about you.

Does it work without giving location?

You can look at the map anywhere without sharing your location. Reporting needs it, once, so the map can't be filled from an armchair on the other side of the world.

When can I get it?

It isn't released yet. It's being built now, and the first version is for iOS. There's no mailing list to join, because that would mean collecting an email address.

Before you rely on it

An empty map is not a safe map.

Blip tells you what people noticed. It doesn't rate a place and it can't watch one, so treat it as local knowledge rather than a verdict. In an emergency, call your local emergency number — 112 across the EU.

Get in touch Read the privacy policy