Bloodline · Thoroughbred pedigree intelligence

Real bloodlines.
In your hand.

Bloodline is an Android app that reads a horse's ancestry the way breeders do — inbreeding, duplicated ancestors, hypothetical crosses — and then lets you breed and race those real bloodlines in a game.

Get in touch See an analysis
Horses in the graph
82,701
Generations scored
8
Platform
Android
Bloodline showing Frankel: Galileo x Kind, inbreeding coefficient 5.26%, crosses to Northern Dancer 3x4, Natalma 4x5x5, Nearctic 4x5, Buckpasser 5x5

Pedigree intelligence

What a breeder asks, answered on the phone.

  • Inbreeding coefficient. Wright's coefficient over eight generations of real ancestry, with how much of the pedigree is actually known, so a low number from a thin pedigree is never mistaken for an outcross.
  • Duplicated ancestors. Every ancestor that appears on both the sire and dam side, in standard breeder notation (3×4, 4×5×5) with its share of the total.
  • Hypothetical crosses. Pair any stallion with any mare and see the foal's pedigree and inbreeding before the mating happens.
  • Five-generation tree. Sire lines in blue, dam lines in rose, duplicated ancestors highlighted; tap any ancestor to open its own pedigree.

Worked example

FRANKEL (GB)

GALILEO × KIND

5.26% inbreeding coefficient · moderate · pedigree 100% known
Duplicated ancestorCrossShare
Northern Dancer3 × 41.56%
Natalma4 × 5,50.78%
Nearctic4 × 50.39%
Buckpasser5 × 50.20%

Galileo × Kind as a hypothetical cross returns the same figures.

Horse analysis screen
Horse analysis
Hypothetical cross screen
Hypothetical cross

The game · in development

Breed and race horses whose ancestry is real.

Horse-racing games on phones run on invented horses. Bloodline's game draws its foals from the same real pedigree graph the analysis uses, so a player's breeding decisions follow the bloodlines that shaped the actual breed.

Real ancestry

Every horse in the game descends from real thoroughbred bloodlines, with the same inbreeding and cross analysis as the pedigree tool.

Free to play

Play free with in-game money, or buy the app. In-game money has no cash value and cannot be cashed out; there are no real-money prizes.

One app

The analysis a breeder uses and the game a fan plays share one pedigree engine and one install.

The market

Pedigree tools are expensive and desktop-bound. Racing games ignore real horses.

Breeding analysis today

  • Professional mating reports cost $199–$799 each; stallion subscriptions run $499–$1,750 a year (TrueNicks 2026 pricing).
  • Produce records on the phone run $424.99 a year (Equineline, iOS).
  • Hypothetical-mating tools are web-only or iPad-only. We found no Android app that does thoroughbred pedigree, inbreeding and hypothetical crosses together.

Racing games today

  • Real racehorses sell: Umamusume, whose characters are each based on a real racehorse, passed $2 billion in player spending (Sensor Tower).
  • The leading mobile racing games breed invented horses.
  • The only games built on real thoroughbred pedigrees are on PC and console.

The money in the breed is real: the 2025 Keeneland September Yearling Sale grossed $531.5 million, the highest total of any thoroughbred auction ever held.

Where it stands

Working today

  • Bloodline 1.0.1 for Android, running on device
  • Pedigree graph of 82,701 thoroughbreds, growing
  • Inbreeding, duplicated-ancestor and hypothetical-cross analysis
  • Five-generation pedigree tree with tap-through navigation

In progress

  • Offline mode with the pedigree graph on the phone
  • The real-bloodline racing game
  • Google Play release

Breeder, buyer, or fan?

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