# HerdMetrix vs TERRA Opis

HerdMetrix and TERRA Opis are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | HerdMetrix | TERRA Opis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | Every 5 months |
| Size | 47 MB | 17 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UNIFORM-Agri](https://appshunter.io/developer/906369827) | [Terra Water Systems Limited](https://appshunter.io/developer/1449885604) |

## What reviewers say

### HerdMetrix

[App page](https://appshunter.io/ios/app/herdmetrix/id964101049)

**Features:** macOS Compatibility

**In-app purchases:** none


### TERRA Opis

[App page](https://appshunter.io/ios/app/terra-opis/id1449885605)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HerdMetrix free?

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

### Is TERRA Opis free?

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

### Do HerdMetrix or TERRA Opis have ads?

Neither HerdMetrix nor TERRA Opis shows ads.

### Which is updated more often, HerdMetrix or TERRA Opis?

HerdMetrix ships an update every 5 months, and TERRA Opis every 5 months. Most recently, HerdMetrix was updated on October 24, 2026 and TERRA Opis on October 26, 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.*