# Power Zero vs M

The clearest difference is review sentiment: M at 80% against Power Zero's 41%. Power Zero's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Power Zero ships an update every 6 weeks, M every 4 months. The most recent releases landed on September 6, 2026 and July 21, 2026 respectively.

## The numbers

| Metric | Power Zero | M |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/power-zero/id1663188533/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 40.9% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | **Free** | Ad-supported |
| Size | 149 MB | 56 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [毅 伍](https://appshunter.io/developer/1088814173) | [M-TEC Energy Systems GmbH](https://appshunter.io/developer/1660700474) |

## What reviewers say

### Power Zero

[App page](https://appshunter.io/ios/app/power-zero/id1663188533)

Monitor and control your smart energy devices remotely. Track energy usage and production in real-time, find ways to improve efficiency, and manage your solar system's status.

**Highlights:** Real-time energy usage tracking, Energy production monitoring, Energy efficiency improvement suggestions, Remote smart home device control, Solar system status monitoring, Historical energy data

**Features:** macOS Compatibility

**In-app purchases:** none


### M

[App page](https://appshunter.io/ios/app/m-tec-e-smart/id6478609608)

Monitor and manage your building's energy flows, generation, and consumption directly from your smartphone. Gain insights with daily, monthly, and annual evaluations, and control connected devices like chargers and heat pumps for increased efficiency and sustainability.

**Highlights:** Visualize energy flows, Energy generation and consumption overview, Daily, monthly, annual evaluations, Energy-Charger control, Heat pump control, Remote energy management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Power Zero free?

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

### Is M free?

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

### Do Power Zero or M have ads?

M shows ads; Power Zero does not.

### Which is updated more often, Power Zero or M?

Power Zero ships an update every 6 weeks, and M every 4 months. Most recently, Power Zero was updated on September 6, 2026 and M on July 21, 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.*