CSI Cloud vs NEPViewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CSI Cloud
Monitor your Canadian Solar plant's performance remotely. Access real-time and historical data on energy production, revenue, and device status. Stay informed about your solar assets from anywhere.
- Real-time data access
- Historical data analysis
- Production energy tracking
- Revenue monitoring
- Device status checks
- Remote network access
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This is the software of client part for surveillance system for Canadian Solar plants, which enables obtain running parameters (production energy, production revenue, device status and etc,) from Canadian Solar Data Center. Furthermore, customers can check real-time data and historical data via remote network.
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.
Screenshots
Verdict
The clearest difference is rating: NEPViewer at 2.3 against CSI Cloud's 1.5. NEPViewer also leads on update cadence (every 3 weeks vs every 2 months). CSI Cloud's advantage is iOS requirement (11.0 vs 15.0). On price, review sentiment, ratings volume and ads 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 holds the better App Store score, 2.3 against 1.5. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews split almost evenly too, at 14% and 14% positive.
CSI Cloud ships an update every 2 months, NEPViewer every 3 weeks. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.
| Parameter | CSI Cloud | NEPViewer |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (2 ratings) | 2.3 (4 ratings) — better |
| Positive reviews | 14.3% of reviews — better | 14.0% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 38 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Canadian Solar Inc. | Northern Electric & Power Inc |
Customer experience
CSI Cloud
NEPViewer
Bugs and requests
CSI Cloud
Not enough reviews yet to summarise bugs or 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
In-app purchases
CSI Cloud
No in-app purchases
NEPViewer
No in-app purchases
