f-tree: Offline family tree app open-source no ad

App Name: f-tree

One-Line Description: A free, offline family tree app that names how any two people are related – in English or other languages – and has a place for the relatives nobody can name.

Key Features:

1. A person needs no name. A blank person is a valid "unknown person" and can be named years later without disturbing a single relationship.
2. Relation finder: pick any two people, get "first cousin once removed" plus every person the line runs through. Walks marriages as well as blood.
3. Hindi kinship terms. English has one word for "uncle"; Hindi has five, and picking the right one needs facts English throws away.
4. A graph, not a tree – remarriage, half-siblings, adoption and step-relations aren't special cases.
5. Fully offline. No account, no server, no analytics. Sharing is a file; importing merges into your tree instead of replacing it.

Who It's For: Anyone writing down a family where the record has holes, or anyone who loves to record keeping their ancestry.

Cost:

– Pricing model: Free
– Prices & billing period: Free, permanently. No ads, no IAP, no subscription, no premium tier.
– Current promotions: N/A

Links:

– Google Play: not published
– GitHub / Source code: https://github.com/thisisankit27/f-tree
– Privacy policy: not required; the app collects nothing and has no server.

Feedback Goals:

– Does your family have a shape that breaks the chart layout? That's the thing I most want to hear about.
– Is the unknown-person concept obvious on first open, or does it need explaining?

Additional Notes: Android 8.0+, ~2 MB, MIT licensed. Not on the Play Store; the APK is on the GitHub releases page and every release publishes its SHA-256. Optional in-place updater is off until you switch it on.