# CalfGuide vs SAYFC

The clearest difference is iOS requirement: SAYFC at 15.6 against CalfGuide's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CalfGuide ships an update every 2 months, SAYFC every 3 months. The most recent releases landed on September 23, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | CalfGuide | SAYFC |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | — |
| Size | 82 MB | 27 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Holm & Laue GmbH & Co. KG](https://appshunter.io/developer/1460267524) | [The Flex Studio Limited](https://appshunter.io/developer/434408637) |

## What reviewers say

### CalfGuide

[App page](https://appshunter.io/ios/app/calfguide/id1460267525)

Manage calf feeding data, monitor drinking habits, and track health with detailed insights from automated systems. Receive customizable notifications for feeding, fill levels, and system alerts to keep your calf barn running smoothly.

**Highlights:** Calf list with feeding data, Automated system overview, Customizable push notifications, Calf health assessment tool, Multi-feeder management

**Features:** macOS Compatibility

**In-app purchases:** none


### SAYFC

[App page](https://appshunter.io/ios/app/sayfc/id6445985383)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CalfGuide free?

CalfGuide is free to download, with no in-app purchases.

### Is SAYFC free?

SAYFC is free to download, with no in-app purchases.

### Do CalfGuide or SAYFC have ads?

Neither CalfGuide nor SAYFC shows ads.

### Which is updated more often, CalfGuide or SAYFC?

CalfGuide ships an update every 2 months, and SAYFC every 3 months. Most recently, CalfGuide was updated on September 23, 2026 and SAYFC on September 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*