# TERRA Opis vs Evolution JFC

The clearest difference is update cadence: Evolution JFC at every 6 days against TERRA Opis's every 5 months. TERRA Opis's advantage is iOS requirement (12.0 vs 15.0). 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.

TERRA Opis ships an update every 5 months, Evolution JFC every 6 days. The most recent releases landed on October 1, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | TERRA Opis | Evolution JFC |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 days** |
| Monetization | — | Free |
| Size | 17 MB | 15 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Terra Water Systems Limited](https://appshunter.io/developer/1449885604) | [JFC Manufacturing Co. Ltd](https://appshunter.io/developer/1529090209) |

## What reviewers say

### TERRA Opis

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Evolution JFC

[App page](https://appshunter.io/ios/app/evolution-jfc/id1496553055)

Monitor your calves and automatic feeders remotely in real-time. This cloud-connected application provides 24/7 online access to your farm data.

**Highlights:** 24/7 online monitoring, Real-time data from feeders, Cloud connectivity, Simple native application

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TERRA Opis free?

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

### Is Evolution JFC free?

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

### Do TERRA Opis or Evolution JFC have ads?

Neither TERRA Opis nor Evolution JFC shows ads.

### Which is updated more often, TERRA Opis or Evolution JFC?

TERRA Opis ships an update every 5 months, and Evolution JFC every 6 days. Most recently, TERRA Opis was updated on October 1, 2026 and Evolution JFC on September 26, 2026.

---

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