# CalfGuide vs TERRA AquaLink

The clearest difference is update cadence: TERRA AquaLink at every 8 days against CalfGuide's every 2 months. TERRA AquaLink also leads on iOS requirement (15.1 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, TERRA AquaLink every 8 days. The most recent releases landed on September 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CalfGuide | TERRA AquaLink |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 82 MB | 32 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Holm & Laue GmbH & Co. KG](https://appshunter.io/developer/1460267524) | [Terra Water Systems Limited](https://appshunter.io/developer/1449885604) |

## 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


### TERRA AquaLink

[App page](https://appshunter.io/ios/app/terra-aqualink/id6759607922)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CalfGuide free?

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

### Is TERRA AquaLink free?

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

### Do CalfGuide or TERRA AquaLink have ads?

Neither CalfGuide nor TERRA AquaLink shows ads.

### Which is updated more often, CalfGuide or TERRA AquaLink?

CalfGuide ships an update every 2 months, and TERRA AquaLink every 8 days. Most recently, CalfGuide was updated on September 23, 2026 and TERRA AquaLink on October 24, 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.*