Caller ID that never uploads your contacts

How ordinary caller ID apps work

The large caller ID services identify strangers because they have collected hundreds of millions of address books. When someone installs the app and grants contacts access, everyone in their phone is added to a shared directory — including people who never installed anything and never agreed to it.

That is why those apps can name an unknown number, and it is also the most common complaint made about them.

How TreeLinker works instead

TreeLinker answers a different question. Not "who owns this number", which requires harvesting, but "how is this person connected to me", which requires only what is already on your phone.

The name and the relationship on the card are read from your own contacts and your own family tree. Nothing is fetched over the network while your phone is ringing, and nothing about the call is published to anyone.

The everyday case is not strangers

In an address book of thousands, the problem usually is not an unknown number. It is a known name you cannot place — four people are saved as Nadia and this is the one whose connection you have forgotten.

That is what the card is for. It gives a placement, not an identification.

The Caller Name on a contact

Each contact has a Caller Name section showing exactly what will appear when that person calls. TreeLinker recommends it from the relationships you have already recorded, and you can accept it, edit it or clear it.

It is a private note. It is never shown to the person it describes, never shown to other users, and never published anywhere.