# KoolCode vs MRLDS 400

KoolCode and MRLDS 400 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.

KoolCode ships an update every 8 months, MRLDS 400 every 5 months. Both last shipped on September 14, 2026.

## The numbers

| Metric | KoolCode | MRLDS 400 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/koolcode/id563222728/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 31 MB | 8 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Danfoss A/S](https://appshunter.io/developer/423984644) | [Copeland LP](https://appshunter.io/developer/464252882) |

## What reviewers say

### KoolCode

[App page](https://appshunter.io/ios/app/koolcode/id563222728)

This utility app provides quick, offline access to alarm and parameter codes for refrigeration controllers. It helps service technicians and engineers easily look up information without needing manuals or laptops.

**Highlights:** On-the-spot ADAP-KOOL controller information, Alarm status and parameter descriptions, Offline code lookup tool, Quick code translation, Hierarchical controller selection

**Features:** macOS Compatibility

**In-app purchases:** none


### MRLDS 400

[App page](https://appshunter.io/ios/app/mrlds-400/id1502566407)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KoolCode free?

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

### Is MRLDS 400 free?

MRLDS 400 is free to download, with no in-app purchases.

### Do KoolCode or MRLDS 400 have ads?

Neither KoolCode nor MRLDS 400 shows ads.

### Which is updated more often, KoolCode or MRLDS 400?

KoolCode ships an update every 8 months, and MRLDS 400 every 5 months. Most recently, KoolCode was updated on September 14, 2026 and MRLDS 400 on September 14, 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.*