iEMS vs EstorageOM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iEMS
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Intelligent Energy Management System (iEMS) - Focusing on the new energy fields of photovoltaic and energy storage, it takes efficient and stable monitoring and operation maintenance as the core. By virtue of real-time data analysis and fault prediction, it improves energy output and reduces costs. It provides customized solutions to adapt to multiple scenarios, and helps promote the sustainable prosperity and development of the green energy industry.
EstorageOM
Optimize your energy usage with real-time monitoring of photovoltaic and energy storage systems. This app helps you manage power more intelligently, track energy storage status, and reduce overall energy expenses for a more efficient home or business.
- Real-time energy utilization monitoring
- Photovoltaic system tracking
- Energy storage system monitoring
- Intelligent power management
- Energy expense reduction
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Explore future energy management！Optimize energy utilization, monitor photovoltaic and energy storage systems in real-time, and achieve more intelligent and efficient power management. Check the energy storage status at any time to reduce energy expenses.
Screenshots
Verdict
The clearest difference is update cadence: EstorageOM at every 2 months against iEMS's every 4 months. On price, ads, in-app purchases and device support 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.
iEMS ships an update every 4 months, EstorageOM every 2 months. The most recent releases landed on October 20, 2026 and October 22, 2026 respectively.
| Parameter | iEMS | EstorageOM |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 40 MB |
| Age rating | 4+ | 17+ |
| Developer | Shenzhen ZTE Software Co., Ltd. | 阿特斯储能科技有限公司 |
In-app purchases
iEMS
No in-app purchases
EstorageOM
No in-app purchases
