A relationship manager for the people you actually know
Personal CRMs track your professional network. TreeLinker tracks the family you are expected to already understand.

Short answer
TreeLinker is a relationship manager for Android. It records how the people in your address book are connected to you and to each other, draws those connections as a tree, keeps a timeline on every contact, and uses the same information to tell you how an incoming caller is related to you. Unlike a professional personal CRM, it is built around families rather than clients, and it stores everything on your device by default.
The information nobody writes down
Families carry a large amount of undocumented knowledge: who is whose in-law, which cousin belongs to which uncle, why two branches do not speak. It is held by one or two people per family, and when they are gone it goes with them.
TreeLinker gives that knowledge a place to live that is not somebody's memory.
A timeline on every person
Each contact has a timeline in reverse chronological order. You add notes — "replaced the kitchen wiring", "did not answer", "excellent work, fair price" — and incoming calls appear alongside them.
Entries you want kept at the top can be pinned, and the pinned ones are what the caller identification card reads from.
Sharing what you have mapped
A tree you have built can be sent to another TreeLinker user. They see the same people, but under the names in their own address book — your names are never imposed on their contacts.
The transfer is one-time. Nothing keeps syncing afterwards, and the sender is told nothing about what the recipient does with it.
Frequently asked questions
Does it remind me to stay in touch?
Not yet. Key dates and upcoming events surface on their own, but there are no keep-in-touch reminders today.
Is this a CRM for work?
It can hold work contacts through tags, but it is designed around family relationships rather than sales pipelines.
What happens to my data if I stop using it?
You can delete your account from inside the app, which removes your data from your device and from the servers.
TreeLinker — a family relationship management app.
Related pages
Relationships
Seven relationship types, automatic reciprocal links, and suggestions with confidence scores and plain-language explanations.
How to keep track of family relationships
Record the connections once, let reciprocal relationships and inference do the maintenance, and keep a timeline so you remember what happened as well as who is who.
Caller ID that never uploads your contacts
Most caller ID apps work by uploading everyone's address book into a shared database. TreeLinker does not have one. It shows how a caller is related to you, using only the contacts already on your phone.
Start with the contacts you already have
TreeLinker is free on Google Play. No ads, no subscription, and your address book never leaves your phone.
Android. Free. No account required to browse your own contacts.