# M Professional vs GlowWatt

The clearest difference is review sentiment: GlowWatt at 100% against M Professional's 14%. M Professional's advantage is iOS requirement (13.0 vs 18.0). 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.

M Professional ships an update every 3 weeks, GlowWatt monthly. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | M Professional | GlowWatt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/glowwatt/id6746350564/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 14.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 20 MB | 10 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [东 李](https://appshunter.io/developer/1228988491) | [aryan rogye](https://appshunter.io/developer/1760952349) |

## 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


### GlowWatt

[App page](https://appshunter.io/ios/app/glowwatt/id6746350564)

This app displays real-time ComEd hourly energy prices for northern Illinois. It features at-a-glance tiles indicating price ranges and offers widgets, lock screen support, and an Apple Watch app. The application prioritizes user privacy with no sign-in or personal data collection.

**Highlights:** Live ComEd hourly energy prices, At-a-glance price range tiles, Widgets and lock screen support, Apple Watch app and complication, No sign-in or personal data collection, Open source

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is M Professional free?

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

### Is GlowWatt free?

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

### Do M Professional or GlowWatt have ads?

Neither M Professional nor GlowWatt shows ads.

### Which is updated more often, M Professional or GlowWatt?

M Professional ships an update every 3 weeks, and GlowWatt monthly. Most recently, M Professional was updated on November 2, 2026 and GlowWatt on November 5, 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.*