# KOEL iGreen vs KROMA

The clearest difference is iOS requirement: KROMA at 14 against KOEL iGreen's 18.0. On price, update cadence, ads and in-app purchases 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, KROMA every 2 months. The most recent releases landed on June 1, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | KOEL iGreen | KROMA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | — |
| Size | 24 MB | 48 MB |
| Requires iOS | 18.0 | **14** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Tor.ai Limited](https://appshunter.io/developer/1288507527) | [KRITILABS TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1705528718) |

## 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


### KROMA

[App page](https://appshunter.io/ios/app/kroma/id6468907234)

**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 KROMA free?

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

### Do KOEL iGreen or KROMA have ads?

Neither KOEL iGreen nor KROMA shows ads.

### Which is updated more often, KOEL iGreen or KROMA?

KOEL iGreen ships an update monthly, and KROMA every 2 months. Most recently, KOEL iGreen was updated on June 1, 2026 and KROMA on September 20, 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.*