# KOEL iGreen vs Parag Shah

The clearest difference is update cadence: Parag Shah at daily against KOEL iGreen's monthly. Parag Shah also leads on iOS requirement (15.6 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, Parag Shah daily. The most recent releases landed on November 3, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | KOEL iGreen | Parag Shah |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Monetization | Free | — |
| Size | 24 MB | 213 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Tor.ai Limited](https://appshunter.io/developer/1288507527) | [Four Point Two Technologies Private Limited](https://appshunter.io/developer/1555241061) |

## 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


### Parag Shah

[App page](https://appshunter.io/ios/app/parag-shah/id6737683194)

**In-app purchases:** none


## Frequently asked questions

### Is KOEL iGreen free?

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

### Is Parag Shah free?

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

### Do KOEL iGreen or Parag Shah have ads?

Neither KOEL iGreen nor Parag Shah shows ads.

### Which is updated more often, KOEL iGreen or Parag Shah?

KOEL iGreen ships an update monthly, and Parag Shah daily. Most recently, KOEL iGreen was updated on November 3, 2026 and Parag Shah on September 23, 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.*