# NEPViewer vs BYM Cloud

The clearest difference is review sentiment: BYM Cloud at 100% against NEPViewer's 14%. BYM Cloud also leads on rating (5.0 vs 2.3) and iOS requirement (12.0 vs 15.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

BYM Cloud holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 14% of NEPViewer's written reviews are positive against 100% of BYM Cloud's.

NEPViewer ships an update every 3 weeks, BYM Cloud every 4 weeks. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | NEPViewer | BYM Cloud |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (4 ratings)](https://appshunter.io/ios/app/nepviewer/id1480269247/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bym-cloud/id1665052217/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 14.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free | Free |
| Size | 62 MB | 60 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Northern Electric & Power Inc](https://appshunter.io/developer/1202736933) | [zhejiang benyi new energy technology co.,ltd.](https://appshunter.io/developer/1536090136) |

## 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


### BYM Cloud

[App page](https://appshunter.io/ios/app/bym-cloud/id1665052217)

Manage device and energy information to streamline operations. This utility app enhances efficiency and intelligence for users.

**Highlights:** Device information management, Energy information management, Streamlined operations, Enhanced intelligence, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NEPViewer free?

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

### Is BYM Cloud free?

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

### Which has better reviews, NEPViewer or BYM Cloud?

BYM Cloud is rated higher. NEPViewer averages 2.3 out of 5 from 4 ratings, while BYM Cloud averages 5.0 from 2 ratings.

### Do NEPViewer or BYM Cloud have ads?

Neither NEPViewer nor BYM Cloud shows ads.

### Which is updated more often, NEPViewer or BYM Cloud?

NEPViewer ships an update every 3 weeks, and BYM Cloud every 4 weeks. Most recently, NEPViewer was updated on October 7, 2026 and BYM Cloud on October 4, 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.*