Private family trees
Your family story, built together.
Map parents, partners and children on a living tree. Add photos and memories, and invite relatives to fill in their branches.
No ads. Your tree is only visible to the people you invite.
What is Sakdulur?
Sakdulur is a free web app for building a private family tree together. “Sak dulur” is Javanese for “one family”: everyone in it can add their own branch, photos and stories, and see how they are all related. It works for a small household as well as a whole trah or bani with hundreds of members.
Everything a family tree needs
A real family tree
Couples side by side, children below, ancestors and descendants together — even with remarriages.
Build it together
Invite relatives as editors or viewers, and share whole branches with the people who know them best.
Private by default
Every tree is private. Only members can see it, and you can export or delete your data anytime.
Ask about your family
“Who is Ayu's father and where does he live?” Ask in plain words and get an answer from your tree. Owners choose whether to turn it on.
One family, many trees
Keep your own tree, your spouse's and your in-laws', and copy a branch between them instead of typing it twice.
Works on every phone
Pinch, zoom and add relatives in a tap, in English or Bahasa Indonesia, light or dark.
How it works
- 1
Create your free account and name your tree.
- 2
Add yourself, your parents, and branch out from there.
- 3
Invite family to add their own branches and photos.
Your family's data stays in the family
We never sell data or show ads. Sessions are revocable, passwords are hashed, and you can download or delete everything whenever you want.
Read our privacy policyQuestions
Is it free?
Yes. Create as many trees as you like and invite your family.
Who can see my tree?
Only the members you invite. Owners decide who is an editor or viewer, and can share branches with specific people.
Can I add relatives who passed away?
Of course. Record dates — even approximate ones like “about 1920” — places, photos and stories.
Can I take my data with me?
Yes. Owners can export a tree as JSON, and everyone can download their account data or delete their account.
What does “Sakdulur” mean?
“Sak dulur” is Javanese for “one family” or “all of us relatives”. The app is made for exactly that: one place where the whole family's tree lives.
Can I use it for a trah or bani reunion?
Yes. Large family groups can share one tree, give each branch's family edit access to their own part, and print or export the whole tree for the reunion.
How does “ask about your family” work?
When a tree's owner turns it on, members can ask questions in Indonesian or English. To answer, the names, dates, places, addresses and notes of the people involved are sent to an AI provider (Google Gemini or Groq). Phone numbers and photos are never sent, and conversations are not stored.
Start your family tree today
It takes a minute to begin — and it becomes something your family keeps.
Start your tree — free