# M Professional vs Delta router connection tool

The clearest difference is update cadence: M Professional at every 3 weeks against Delta router connection tool's every 7 months. Delta router connection tool's advantage is iOS requirement (8.0 vs 13.0). 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.

M Professional ships an update every 3 weeks, Delta router connection tool every 7 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | M Professional | Delta router connection tool |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 7 months |
| Monetization | Free | — |
| Size | 20 MB | 90 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [东 李](https://appshunter.io/developer/1228988491) | [Delta Electronics, Inc.](https://appshunter.io/developer/386896582) |

## What reviewers say

### M Professional

[App page](https://appshunter.io/ios/app/m-professional/id1385941241)

Monitor and configure your solar inverter system in real-time. Request RMA services and perform daily maintenance using Bluetooth Low Energy. Stay informed about your system's status and parameters.

**Highlights:** Real-time status monitoring, Parameter configuration, RMA service requests, Daily maintenance, BLE communication

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

**In-app purchases:** none


### Delta router connection tool

[App page](https://appshunter.io/ios/app/delta-router-connection-tool/id1449109808)

**In-app purchases:** none


## Frequently asked questions

### Is M Professional free?

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

### Is Delta router connection tool free?

Delta router connection tool is free to download, with no in-app purchases.

### Do M Professional or Delta router connection tool have ads?

Neither M Professional nor Delta router connection tool shows ads.

### Which is updated more often, M Professional or Delta router connection tool?

M Professional ships an update every 3 weeks, and Delta router connection tool every 7 months. Most recently, M Professional was updated on November 2, 2026 and Delta router connection tool on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*