NEPViewer vs KKT KOLBE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NEPViewer
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.
- Real-time system monitoring
- Track energy harvest
- View installed systems
- Check system performance
- Multi-language support
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NEPViewer provides real-time monitoring for BDM micro inverter systems from Northern Electric & Power Inc. (NEP) - End user can easily check on system output and energy harvest - Installer can check a list of systems installed and performance A username and password from https://www.nepviewer.com is required. User of this APP needs to register on the NEPViewer website first. NEPViewer supports multiple languages including English, Spanish, German, French, Portuguese, Polish, Japanese and Chinese.
KKT KOLBE
Monitor your photovoltaic energy storage system with advanced data collection and analysis. View dynamic graphs and add devices easily for a clear understanding of your energy usage.
- Advanced data monitoring
- Dynamic graph display
- Clear data visualization
- One-click device addition
- Professional data analysis
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KKT KOLBE is a very practical photovoltaic energy storage monitoring app 1. The most advanced collector can be used for data monitoring 2. Accurate data, dynamic graph display, clear and clear 3. One click device addition 4. Data from multi-angle professional analysis equipment
Screenshots
Verdict
The clearest difference is update cadence: NEPViewer at every 3 weeks against KKT KOLBE's every 2 months. NEPViewer also leads on review sentiment (14% vs 0%). KKT KOLBE's advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, KKT KOLBE every 2 months. Both last shipped on November 3, 2026.
| Parameter | NEPViewer | KKT KOLBE |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (5 ratings) — better | — |
| Positive reviews | 13.8% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 — better | — |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 62 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Northern Electric & Power Inc | SHENZHEN SHUOXINDA TECHNOLOGY Co., Ltd. |
Customer experience
NEPViewer
KKT KOLBE
Bugs and requests
NEPViewer
Reported bugs
12 issues- App closes immediately on launch/login
- Blank error box when resetting password
- App offline frequently
- Inaccurate wattage readings
- Cannot connect to all inverters
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- Serial number error during inverter pairing
- Display issues on iPad (white screen, cut-off content)
- App crashes after iOS updates
- Network anomaly errors
- Login issues after updates
- Data not refreshing or delayed
- App requires daily reinstallation to view data
Requested features
7 requests- Restore panel performance view
- Restore daily/hourly graphs and curves
- Improve iPad/landscape mode support
- Better customer support
- Option to stay logged in
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- More accurate real-time data
- Improve scaling of axes in graphs
KKT KOLBE
Not enough reviews yet to summarise bugs or requests.
In-app purchases
NEPViewer
No in-app purchases
KKT KOLBE
No in-app purchases
