# MRLDS 400 vs KE2 Sensor Tool

The clearest difference is update cadence: KE2 Sensor Tool at every 2 weeks against MRLDS 400's every 5 months. MRLDS 400's advantage is iOS requirement (14.0 vs 17.6). 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.

MRLDS 400 ships an update every 5 months, KE2 Sensor Tool every 2 weeks. The most recent releases landed on September 28, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | MRLDS 400 | KE2 Sensor Tool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Size | 8 MB | 2 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Copeland LP](https://appshunter.io/developer/464252882) | [KE2 Therm Solutions](https://appshunter.io/developer/1646449848) |

## What reviewers say

### MRLDS 400

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

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

**In-app purchases:** none


### KE2 Sensor Tool

[App page](https://appshunter.io/ios/app/ke2-sensor-tool/id6743175699)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MRLDS 400 free?

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

### Is KE2 Sensor Tool free?

KE2 Sensor Tool is free to download, with no in-app purchases.

### Do MRLDS 400 or KE2 Sensor Tool have ads?

Neither MRLDS 400 nor KE2 Sensor Tool shows ads.

### Which is updated more often, MRLDS 400 or KE2 Sensor Tool?

MRLDS 400 ships an update every 5 months, and KE2 Sensor Tool every 2 weeks. Most recently, MRLDS 400 was updated on September 28, 2026 and KE2 Sensor Tool on October 9, 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.*