Comparison

IAMMETER vs NEPViewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Home Energy Monitor

★ 2.73 ratingsView app →

About

IAMMETER

Monitor your home's electricity consumption in real-time. Track energy flow, grid import/export, and solar PV production. Integrate with popular home automation systems.

Highlights

Real-time electricity usage tracking
Monitor energy flow
Solar PV system production monitoring
Grid import/export tracking
Home automation integration

Features

Read full description

This app is a tool of IAMMETER (https://www.iammeter.com), an online energy monitoring system developed by us. By installing our WiFi energy meter and running this app, you can 1. Track your home electricity usage in real-time. To learn more, please visit https://www.iammeter.com/doc/iammeter/residential_electricity_system.html; 2. Monitor the entire energy flow, the energy imported from/exported to grid and solar PV system production, for you solar PV system. To learn more, please visit https://www.iammeter.com/doc/iammeter/monitor-your-solar-system.html; 3. Integrate with some Home Automation system, such as Home Assistant, openHAB, NodeRED, etc. To learn more, please visit https://www.iammeter.com/doc/iammeter/home_automation.html. To buy our WiFi energy meters, please visit our Aliexpress Store https://devicebit-iot.aliexpress.com. For more details, please visit https://www.iammeter.com Customer Support: Email: support@devicebit.com Mobile: +86 13911890238

About

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.

Highlights

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

Features

Read full description

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

IAMMETER4 screens

NEPViewer4 screens

Verdict

The call

The clearest difference is review sentiment: IAMMETER at 100% against NEPViewer's 14%. NEPViewer's advantage is update cadence (every 3 weeks vs every 6 weeks). 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

IAMMETER ships an update every 6 weeks, NEPViewer every 3 weeks. The most recent releases landed on September 10, 2026 and September 22, 2026 respectively.

Scorecard2 real differences · 8 level

IAMMETER versus NEPViewer: the parameters behind the verdict, then further details
Parameter	IAMMETER	NEPViewer
Price	Free	Free
Rating	—	2.7 (3 ratings) — better
Positive reviews	100.0% of reviews — better	14.3% of reviews
Number of ratings	—	3 — better
Update frequency	Every 6 weeks	Every 3 weeks — better
Ads	No	No
In-app purchases	No	No
Monetization	Free	Free
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.6	15.0 — better
Further details — not scored
Size	12 MB	62 MB
Age rating	4+	4+
Developer	Beijing Lewei IoT Technologies Co.,Ltd.	Northern Electric & Power Inc

Customer experience

IAMMETER

Written reviews3 reviews

Positive100.0%

Neutral0.0%

Negative0.0%

NEPViewer

All ratings3 ratings

Positive33.3%

Neutral0.0%

Negative66.7%

Written reviews56 reviews

Positive14.3%

Neutral26.8%

Negative58.9%

Bugs and requests

IAMMETER

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

Show 7 more

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

Show 2 more

More accurate real-time data
Improve scaling of axes in graphs

In-app purchases

None

IAMMETER

No in-app purchases

None

NEPViewer

No in-app purchases

Questions

Is IAMMETER free?

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

Is NEPViewer free?

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

Do IAMMETER or NEPViewer have ads?

Neither IAMMETER nor NEPViewer shows ads.

Which is updated more often, IAMMETER or NEPViewer?

IAMMETER ships an update every 6 weeks, and NEPViewer every 3 weeks. Most recently, IAMMETER was updated on September 10, 2026 and NEPViewer on September 22, 2026.