# i6Yun vs Bus Master D

The clearest difference is update cadence: i6Yun at every 3 weeks against Bus Master D's every 4 months. i6Yun also leads on iOS requirement (13.0 vs 15.5). 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.

i6Yun ships an update every 3 weeks, Bus Master D every 4 months. The most recent releases landed on October 12, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | i6Yun | Bus Master D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/i6yun/id1225082477/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 87 MB | 54 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Dongguan Tuancheng Automation Equipment Co., Ltd.](https://appshunter.io/developer/1181389850) | [Adnan Bilani](https://appshunter.io/developer/1623779048) |

## What reviewers say

### i6Yun

[App page](https://appshunter.io/ios/app/i6yun/id1225082477)

Remotely monitor and manage generator sets from anywhere in the world. View real-time operating data, engine and generator details, and receive maintenance reminders. Includes fault analysis and location tracking.

**Highlights:** Real-time monitoring, Dynamic data display, Engine and generator details, Failure analysis with black box technology, Health reports, History data charts, Unit location tracking, Maintenance reminders

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

**In-app purchases:** none


### Bus Master D

[App page](https://appshunter.io/ios/app/bus-master-d/id1634665909)

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

**In-app purchases:** none


## Frequently asked questions

### Is i6Yun free?

i6Yun is free to download, with no in-app purchases.

### Is Bus Master D free?

Bus Master D is free to download, with no in-app purchases.

### Do i6Yun or Bus Master D have ads?

Neither i6Yun nor Bus Master D shows ads.

### Which is updated more often, i6Yun or Bus Master D?

i6Yun ships an update every 3 weeks, and Bus Master D every 4 months. Most recently, i6Yun was updated on October 12, 2026 and Bus Master D on October 20, 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.*