# SMA Energy vs NEPViewer

The clearest difference is rating: SMA Energy at 3.8 against NEPViewer's 2.0. SMA Energy also leads on ratings volume (1.4K vs 5) and review sentiment (29% vs 14%). NEPViewer's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

SMA Energy holds the better App Store score, 3.8 against 2.0. That said, the two scores are not equally well evidenced: SMA Energy has 1.4K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 29% of SMA Energy's written reviews are positive against 14% of NEPViewer's.

SMA Energy ships an update every 2 months, NEPViewer every 3 weeks. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | SMA Energy | NEPViewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (1.4K ratings)](https://appshunter.io/ios/app/sma-energy/id1476822720/reviews)** | [2.0 (5 ratings)](https://appshunter.io/ios/app/nepviewer/id1480269247/reviews) |
| Number of ratings | **1.4K** | 5 |
| Positive reviews | **29.0% of reviews** | 13.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 171 MB | 62 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SMA Solar Technology AG](https://appshunter.io/developer/331869966) | [Northern Electric & Power Inc](https://appshunter.io/developer/1202736933) |

## What reviewers say

### SMA Energy

[App page](https://appshunter.io/ios/app/sma-energy/id1476822720)

Monitor your home energy system and manage energy flows efficiently. Optimize solar power usage, track electricity production and consumption, and control electric vehicle charging. Take control of your personal energy transition.

**Highlights:** Energy system overview, Real-time data visualization, Solar power forecasting, Energy flow optimization, Electric vehicle charging control, Sustainable energy management

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Accurate current generation data
- 👍 Improved app design and visuals
- 💡 Expanded functionality (e-mobility, forecasting)
- 🔋 Reliable performance

**What reviewers complain about**

- 🐛 Frequent app crashes or freezes
- 🕰️ Slow data updates and loading times
- 📊 Limited historical data and analytics
- 🔍 Lack of detailed system information
- 🔌 Incompatibility with older devices/OS

**Reported bugs**

- Incorrect or missing generation data
- Unreliable login and password reset functionality
- Inconsistent app behavior across devices
- Inability to access system logs and diagnostics

**Requested features**

- Ability to customize data views and graphs
- Improved notification and alert system
- Integration with home automation and smart devices
- Support for off-grid and battery-only systems
- Easier system registration and data migration


### NEPViewer

[App page](https://appshunter.io/ios/app/nepviewer/id1480269247)

Monitor your BDM micro inverter system in real-time. Track system output and energy harvest, or view installed systems and their performance. Requires registration on the NEPViewer website.

**Highlights:** Real-time system monitoring, Track energy harvest, View installed systems, Check system performance, Multi-language support

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

**In-app purchases:** none

**What reviewers like**

- 👍 Intuitive and easy to use (some users)
- ✨ Modern look and feel (some users)
- ✅ App does what it's supposed to (sometimes)

**What reviewers complain about**

- 🐛 Frequent crashes and closing
- ❌ Login and password reset issues
- 📉 Inaccurate or delayed data
- 🚫 Loss of important features (panel view, daily graphs)
- 🖥️ Poor iPad/landscape support

**Reported bugs**

- App closes immediately on launch/login
- Blank error box when resetting password
- App offline frequently
- Inaccurate wattage readings
- Cannot connect to all inverters

**Requested features**

- Restore panel performance view
- Restore daily/hourly graphs and curves
- Improve iPad/landscape mode support
- Better customer support
- Option to stay logged in


## Frequently asked questions

### Is SMA Energy free?

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

### Is NEPViewer free?

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

### Which has better reviews, SMA Energy or NEPViewer?

SMA Energy is rated higher. SMA Energy averages 3.8 out of 5 from 1.4K ratings, while NEPViewer averages 2.0 from 5 ratings.

### Do SMA Energy or NEPViewer have ads?

Neither SMA Energy nor NEPViewer shows ads.

### Which is updated more often, SMA Energy or NEPViewer?

SMA Energy ships an update every 2 months, and NEPViewer every 3 weeks. Most recently, SMA Energy was updated on October 30, 2026 and NEPViewer on October 29, 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.*