# CalfGuide vs ECU

The clearest difference is update cadence: CalfGuide at every 2 months against ECU's every 33 months. ECU's advantage is iOS requirement (11.0 vs 17.6). On price, ads, in-app purchases and device support 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, ECU every 33 months. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | CalfGuide | ECU |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 33 months |
| Monetization | Free | — |
| Size | 82 MB | 25 MB |
| Requires iOS | 17.6 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Holm & Laue GmbH & Co. KG](https://appshunter.io/developer/1460267524) | [Appleby Italiana Srl](https://appshunter.io/developer/1458734548) |

## 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


### ECU

[App page](https://appshunter.io/ios/app/ecu-18-manager/id1462414446)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CalfGuide free?

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

### Is ECU free?

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

### Do CalfGuide or ECU have ads?

Neither CalfGuide nor ECU shows ads.

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

CalfGuide ships an update every 2 months, and ECU every 33 months. Most recently, CalfGuide was updated on September 8, 2026 and ECU on September 10, 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.*