Free desktop app for breeders and keepers

Collection tracking, breeding management, and genetics tools — in one place.

ReptiLogic is a free, open-source Windows app that keeps your entire reptile operation organised. Collection records, breeding projects, health logs, genetics calculations, and professional reports — all stored locally on your machine with no accounts or subscriptions required.

Download for Windows View on GitHub

Free and open-source. No account required. Source code and release notes on GitHub.

v1.1.2 Windows Dark & light mode Local storage only GPL-3.0
ReptiLogic dashboard showing collection summary and care reminders
Features

Everything a reptile breeder actually needs.

Built around the workflows breeders use every day — not a generic pet tracker with reptile branding bolted on.

Collection

  • Every animal in one place — photos, morphs, weight history, DOB, and notes
  • Auto-generated Animal IDs based on species, sex, and morphs, or bring your own system
  • Filter and search across the whole collection by species, sex, status, or name
  • Full lineage tracking with a clickable family tree going back as many generations as you have recorded
  • Import an existing spreadsheet via CSV to get started quickly

Health

  • Dedicated health dashboard per animal with a visual weight trend chart
  • Log health issues, medications, and vet visits in one timeline
  • Configurable reminders when an animal is overdue for feeding or weighing
  • Complete treatment history attached to the animal record — nothing gets lost

Breeding

  • Track pairings through the full lifecycle — Planned, Active, Gravid, Laid, Hatched
  • Log clutch and litter details with incubation data and individual offspring records
  • Add Babies Wizard steps through each hatchling and links them to both parents automatically
  • Suggested pairings engine flags complementary genetics across your active collection

Genetics Calculator

  • Full Punnett square engine for recessive, co-dominant, dominant, line-bred, and sex-linked traits
  • Allele complex support — Lesser × Mojave correctly produces a BEL outcome, not two independent results
  • Banana and Coral Glow Male Maker and Female Maker sex ratios modelled accurately
  • Each outcome shows morph name, probability, expected clutch count range, and sex ratio notes

Morph Library

  • Built-in databases for Ball Python, Western Hognose, Leopard Gecko, and Bearded Dragon
  • Health concern flags on morphs that carry known issues — Spider wobble, Enigma syndrome, Lemon Frost tumours, Silkback husbandry requirements, and more
  • Add custom morphs for any species and they become available in the calculator automatically

Backup, Export & Reports

  • Automatic compressed backups on launch or close — choose where they save and how many to keep
  • Restore any saved backup with one click
  • Export your collection, breeding records, and morph data to CSV at any time
  • Print a professional husbandry report for any animal — photo, pedigree, weight history, and feeding records included
Getting started

Up and running in minutes.

A guided first-run wizard walks through database location, backup configuration, and app preferences — so there's nothing to figure out before you can start adding animals.

5-step guided setup wizard
130+ ball python morphs built in
1 click restore from any backup
Screenshots

See it in action.

Step through each screen with the arrows, or click any image to open it full size.

Featured screen
1 / 9
Download

Free to download. Free forever.

Grab the Windows installer for the quickest start, or head to GitHub for the source code, release notes, and full project history.

1Download the latest Windows installer from GitHub
2Run the installer and follow the first-run setup wizard
3Start adding animals, projects, and genetics data
Download latest release View on GitHub More projects
Support development

ReptiLogic is free. Keeping it that way takes time.

Tips aren't required, but they go directly toward future development — new features, bug fixes, and additional species support. If the app saves you time or helps you keep better records, any support is genuinely appreciated.

Buy me a coffee