# MRU4u vs Night Star Express

The clearest difference is device support: MRU4u at 3 against Night Star Express's 1. 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.

MRU4u ships an update every 5 weeks, Night Star Express every 2 months. The most recent releases landed on October 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | MRU4u | Night Star Express |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 145 MB | 148 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MRU Messgeräte für Rauchgase und Umweltschutz GmbH](https://appshunter.io/developer/1110341400) | [1st Log AG](https://appshunter.io/developer/1382701140) |

## What reviewers say

### MRU4u

[App page](https://appshunter.io/ios/app/mru4u/id1110341401)

Control MRU Fluegas Monitoring Units remotely via Bluetooth. Transfer and store measured data on your smartphone or tablet, with options to export as CSV or email screenshots. View live data as text or charts, with customizable value displays.

**Highlights:** Bluetooth remote control, Live data display (text/chart), Customizable data views, Data storage on device, CSV data export, Email data screenshots

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

**In-app purchases:** none


### Night Star Express

[App page](https://appshunter.io/ios/app/night-star-express/id6450203765)

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

**In-app purchases:** none


## Frequently asked questions

### Is MRU4u free?

MRU4u is free to download, with no in-app purchases.

### Is Night Star Express free?

Night Star Express is free to download, with no in-app purchases.

### Do MRU4u or Night Star Express have ads?

Neither MRU4u nor Night Star Express shows ads.

### Which is updated more often, MRU4u or Night Star Express?

MRU4u ships an update every 5 weeks, and Night Star Express every 2 months. Most recently, MRU4u was updated on October 4, 2026 and Night Star Express on October 30, 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.*