# RTB BLX vs MX Field App

The clearest difference is update cadence: MX Field App at every 2 months against RTB BLX's every 7 months. MX Field App also leads on iOS requirement (13.0 vs 16.6). 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.

RTB BLX ships an update every 7 months, MX Field App every 2 months. The most recent releases landed on October 11, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | RTB BLX | MX Field App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/mx-field-app/id1638210254/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 35 MB | 47 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RTB Elektronik](https://appshunter.io/developer/1033533477) | [Carmanah Technologies Corporation](https://appshunter.io/developer/1394736633) |

## What reviewers say

### RTB BLX

[App page](https://appshunter.io/ios/app/rtb-blx/id1524448175)

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

**In-app purchases:** none


### MX Field App

[App page](https://appshunter.io/ios/app/mx-field-app/id1638210254)

This utility app simplifies the setup and on-site modification of traffic control systems. It allows users to quickly access and change system settings, program schedules, and view system health data remotely via Bluetooth. The app offers a user-friendly, step-by-step programming experience for efficient traffic beacon and sign management.

**Highlights:** Quick system setup, On-site setting changes, Remote programming up to 100 feet, Step-by-step programming, System health data and fault reporting, Unlimited operating schedule management, Built-in system security

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RTB BLX free?

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

### Is MX Field App free?

MX Field App is free to download, with no in-app purchases.

### Do RTB BLX or MX Field App have ads?

Neither RTB BLX nor MX Field App shows ads.

### Which is updated more often, RTB BLX or MX Field App?

RTB BLX ships an update every 7 months, and MX Field App every 2 months. Most recently, RTB BLX was updated on October 11, 2026 and MX Field App on September 24, 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.*