# CSI MB vs RT Notifier

The clearest difference is update cadence: CSI MB at every 5 months against RT Notifier's every 31 months. CSI MB also leads on iOS requirement (11.0 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.

CSI MB ships an update every 5 months, RT Notifier every 31 months. The most recent releases landed on September 17, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | CSI MB | RT Notifier |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 31 months |
| Monetization | — | Free |
| Size | 10 MB | 35 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HNF Consultancy Ltd](https://appshunter.io/developer/474783515) | [Road Tech Computer Systems Ltd.](https://appshunter.io/developer/740517139) |

## What reviewers say

### CSI MB

[App page](https://appshunter.io/ios/app/csi-mb/id1308933687)

**Features:** macOS Compatibility

**In-app purchases:** none


### RT Notifier

[App page](https://appshunter.io/ios/app/rt-notifier/id1497682322)

This companion app delivers notifications for users of specific Road Tech products and services. Stay informed about important updates and alerts related to your Road Tech solutions.

**Highlights:** Receive notifications, Companion app, Supports Road Tech products, Business alerts, Service updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CSI MB free?

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

### Is RT Notifier free?

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

### Do CSI MB or RT Notifier have ads?

Neither CSI MB nor RT Notifier shows ads.

### Which is updated more often, CSI MB or RT Notifier?

CSI MB ships an update every 5 months, and RT Notifier every 31 months. Most recently, CSI MB was updated on September 17, 2026 and RT Notifier on June 4, 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.*