Score the relationships that shape your family tree.
Private beta

Map the chemistry in your family tree.

Neptus scores the relationships around you - parents, siblings, partners, and the people you are curious about - using numerology, astrology, and the Chinese zodiac. Start from scratch, upload a GEDCOM file, or explore the demo.

  • Build or upload your family tree - and export it as a .ged file
  • Compatibility scores with full explanations, not black boxes
  • Compare anyone in your tree with anyone else - or a new profile
  • No account needed. Your tree stays on this server.

Start your tree

No file needed - begin with yourself and add family as you go.

Upload a .ged file

Already have a family tree on Geni, MyHeritage, Ancestry, or FamilySearch? Export it as GEDCOM (.ged) and drop it here.

Most genealogy sites have an "Export to GEDCOM" option under tree settings.

Explore the demo

See Neptus in action on a real multi-generation family tree before adding your own data.

Open the demo tree

The demo is read-only - one click copies it into your own editable tree.

How it works

  1. Pick yourself in the tree.
  2. Get scores for every immediate family member.
  3. Compare with anyone - including people not in the tree yet.
  4. Add partners and children, then export the updated .ged.
Explainable Every score shows the numerology and astrology inputs behind it, with confidence indicators when dates are missing.
Yours Build the tree here, take it anywhere: export standard GEDCOM at any time.
Private No accounts, no third-party storage or analytics by default.