# KOEL iGreen vs Feather Fresh

The clearest difference is update cadence: Feather Fresh at every 11 days against KOEL iGreen's monthly. Feather Fresh also leads on iOS requirement (13.0 vs 18.0). 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.

KOEL iGreen ships an update monthly, Feather Fresh every 11 days. The most recent releases landed on September 25, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | KOEL iGreen | Feather Fresh |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | Free | — |
| Size | 24 MB | 23 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Tor.ai Limited](https://appshunter.io/developer/1288507527) | [Sham Foam](https://appshunter.io/developer/1637601751) |

## What reviewers say

### KOEL iGreen

[App page](https://appshunter.io/ios/app/koel-igreen/id1481347446)

Monitor machine health, receive critical alarms, and manage preventive maintenance schedules. This app works with a 'Plug and Play' device that connects directly to your machine's harness for real-time data.

**Highlights:** Machine health performance monitoring, Machine alarms and trips alerts, Preventive maintenance scheduling, Plug and Play device integration, Real-time data monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### Feather Fresh

[App page](https://appshunter.io/ios/app/feather-fresh/id1637614367)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KOEL iGreen free?

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

### Is Feather Fresh free?

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

### Do KOEL iGreen or Feather Fresh have ads?

Neither KOEL iGreen nor Feather Fresh shows ads.

### Which is updated more often, KOEL iGreen or Feather Fresh?

KOEL iGreen ships an update monthly, and Feather Fresh every 11 days. Most recently, KOEL iGreen was updated on September 25, 2026 and Feather Fresh on September 27, 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.*