Yolkbook: Chicken Egg Tracker

Yolkbook is an egg tracker and flock journal for backyard chickens, ducks, quail, geese and turkeys. Track your hens' egg production, feed costs and hatches — all on your phone.

Count eggs in one tap
- Today screen with a big counter for each flock: +1, −1, done.
- Home screen widget: add eggs without opening the app.
- Optional per-hen counts, egg marks (double yolk, soft shell, broken…), monthly calendar heatmap.

Know what your eggs cost
- Log feed, bedding and other expenses in seconds — the last values are remembered.
- Cost per egg and per dozen, compared with your store price.
- Egg sales and eggs used at home, running balance, charts by week, month and year.

Hatching made simple
- Incubation calendar with candling days, lockdown and hatch day — typical values, always editable.
- Reminders for each stage, hatch rate, add the chicks to your flock in one tap.

Your birds, your notes
- Birds with photos, breed, age and status history (laying, broody, molting…).
- Free-text notes with tags and photos. Your own reminders on your own schedule.

Your data stays with you
- No account, no tracking. Your data never reaches our servers — only your phone's own Google backup may copy it to your Google account (photos are not included).
- Export CSV files for your spreadsheet and PDF monthly/yearly reports.
- One-tap backup file you can keep on your phone or in Google Drive — and restore any time.
- Import egg counts from a spreadsheet or another app's CSV export.

Breeder Pack (optional add-on)
- Simple pedigree: mother and father for each bird, offspring and a 3-generation family tree.
- Hatch history: compare hatch rates by incubator, parents or egg source, species and year.
- Hatch card PDF for selling chicks: hatch date, parents and your own note and contact details.
Breeder Pack works on its own, but without Pro the free limits stay (6 named birds, 1 incubation at a time, 1 flock) — for more birds, incubations or flocks you need Pro, or get Pro + Breeder Pack together. It shows only the data and text you enter.

Pay once
Free forever: egg counter, widget, cost per egg, backup and CSV export; 1 flock, 6 named birds, 1 incubation at a time, 90 days of statistics. Try everything in Pro free for 14 days — you start the trial when you choose. Pro: unlimited flocks and birds, full history, PDF reports, several incubations at once — one payment, no subscription. Breeder Pack is a separate one-time add-on, or get Pro + Breeder Pack together.

Yolkbook doesn't give veterinary or feeding advice. It records what you enter.