# NEPViewer vs xDTU Connect

The clearest difference is update cadence: xDTU Connect at weekly against NEPViewer's every 3 weeks. NEPViewer's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.2). On price, review sentiment, 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.

NEPViewer ships an update every 3 weeks, xDTU Connect weekly. The most recent releases landed on October 20, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | NEPViewer | xDTU Connect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (4 ratings)](https://appshunter.io/ios/app/nepviewer/id1480269247/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 13.8% of reviews | **20.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 62 MB | 3 MB |
| Requires iOS | **15.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Northern Electric & Power Inc](https://appshunter.io/developer/1202736933) | [Aliaksandr Strakovich](https://appshunter.io/developer/969045272) |

## What reviewers say

### 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


### xDTU Connect

[App page](https://appshunter.io/ios/app/xdtu-connect/id6477761541)

Monitor your ESP32 hardware with OpenDTU firmware. View telemetry data directly on your device or through widgets. Ensure read-only web access is configured for optimal performance.

**Highlights:** ESP32 hardware monitoring, OpenDTU firmware integration, Telemetry data display, Widget support, Feedback and suggestions section

**In-app purchases:** none


## Frequently asked questions

### Is NEPViewer free?

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

### Is xDTU Connect free?

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

### Do NEPViewer or xDTU Connect have ads?

Neither NEPViewer nor xDTU Connect shows ads.

### Which is updated more often, NEPViewer or xDTU Connect?

NEPViewer ships an update every 3 weeks, and xDTU Connect weekly. Most recently, NEPViewer was updated on October 20, 2026 and xDTU Connect on October 9, 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.*