# HerdFlo: Gestation Calculator — Due dates + herd records

> Due dates + herd records (iPhone/iPad app by John Shoufler.)

- Source: https://appshunter.io/ios/app/herdflo-gestation-calculator/id6777278042 (this page in markdown: same URL + `.md`)
- Developer: [John Shoufler](https://appshunter.io/developer/1895268424)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 11 MB
- Languages: American English
- Released: 2026-06-17
- Data updated: 2026-08-07
- User reviews in markdown: https://appshunter.io/ios/app/herdflo-gestation-calculator/id6777278042/reviews.md

## What is HerdFlo?

HerdFlo is the fast, accurate gestation calculator and herd record keeper built for ranchers, smallholders, and breeders. Enter a breeding date and instantly get the expected due date, plus a milestone timeline you can plan around.

ACCURATE DUE DATES FOR YOUR HERD
Covers 28 species and 61+ breed-specific gestation lengths — cattle, goats, sheep, pigs, horses, donkeys, llamas, alpacas, rabbits, dogs, and many more. Pick the species and breed and HerdFlo does the math for you. Works fully offline, so it keeps working in the barn, the pasture, or anywhere with no signal.

PLAN FORWARD OR BACKWARD
Forward planning: enter the breeding date, get the due date. Reverse planning: pick the date you want animals to deliver and HerdFlo tells you when to breed. Great for lining up calving and kidding with weather, labor, and market timing.

MILESTONE TIMELINE
Each due date comes with a milestone timeline highlighting key checkpoints across the pregnancy so you know what to watch for and when. Always confirm health decisions with your veterinarian — HerdFlo organizes the schedule, your vet provides the care.

EXPORT TO YOUR CALENDAR
Export any due date and its milestones to your calendar with .ics export, so reminders show up alongside the rest of your schedule.

HERD RECORDS THAT STAY ORGANIZED
Keep full records for every animal:
- Breeding to calving/kidding events, with birth weight and calving ease
- Weight tracking over time
- Treatments and medications, with withdrawal-date tracking
- Pasture and pen moves
- Photos for each animal
- Calving-interval analytics to spot your most productive females
- CSV import and export so your data is always yours

BUILT FOR THE FIELD
- Works offline; no account required to use the calculator
- Clean, fast, and simple to use with gloves on
- Free for up to 5 animals
- Optional records keeping for larger herds

Whether you run a few backyard goats or a working cattle operation, HerdFlo keeps your breeding calendar and herd records in one organized place. Download HerdFlo and never guess a due date again.

HERDFLO PRO (optional subscription)
The free plan stores up to 5 animals. HerdFlo Pro removes the limit for $5.99/month or $39.99/year — an auto-renewing subscription billed to your Apple ID, cancellable anytime in your App Store subscription settings.
Terms of Use: https://herd.farmsflo.com/terms.html
Privacy Policy: https://herd.farmsflo.com/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| HerdFlo Pro Monthly | $5.99 | per month |
| HerdFlo Pro Yearly | $39.99 | per year |



## Version history (last 4 releases)

### 1.3 — 2026-08-03

Pick your plan right at signup, get your results emailed to you from the calculator, and enjoy reliability fixes.

### 1.2 — 2026-08-01

- Your due dates can now be saved straight to your free herd book from the result screen
- Clearer, faster path from the calculator into your animal records
- Stability and performance improvements

### 1.1 — 2026-07-24

- My Herd is now easy to reach on every iPhone (fixed a layout issue that could hide the top navigation)
- Quicker path from the calculator to your herd records and free account backup
- Polish and fixes

### 1.0 — 2026-06-17

No release notes.

## More apps by John Shoufler

- [TaskTroll](https://appshunter.io/ios/app/tasktroll/id6763332784)
- [PassMyDMV](https://appshunter.io/ios/app/passmydmv/id6765741993)
- [WrestleRef](https://appshunter.io/ios/app/wrestleref/id6766253452)
- [WrestleFlow](https://appshunter.io/ios/app/wrestleflow/id6766253497)
- [WrestleFlow Teams](https://appshunter.io/ios/app/wrestleflow-teams/id6766253759)
- [RoutinePals](https://appshunter.io/ios/app/routinepals/id6774841331)

All apps by John Shoufler: https://appshunter.io/developer/1895268424

## Related topics

[livestock gestation calculator](https://appshunter.io/ios/topics/livestock-gestation-calculator)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-07.*