WANJIN ESS vs KorEMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WANJIN ESS
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The EMS App supports the access and unified control of energy storage, photovoltaic and charging equipment. Support different operators' access, and completely isolate the data of each operator. Flexible generation of daily, monthly, and annual operating data reports and revenue data. For end users of energy storage, it provides power generation and power consumption data viewing, optimizes energy supply, and monitors energy equipment anytime and anywhere through instant reminders and remote access functions.
KorEMS
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KorEMS is a mobile application software designed specifically for users in the energy storage industry. In order to improve the utilization efficiency of energy storage devices and optimize energy management, we are committed to developing an energy storage cloud platform APP to provide more efficient and convenient energy storage management solutions. Through this software, users can access information services such as real-time status, real-time alarms, rechargeable and discharged power, and power station revenue of energy storage stations anytime and anywhere. [Functional Features] 1. Real time monitoring: Real time collection of operational data of energy storage devices through IoT technology, such as battery level, alarms, charging and discharging status, etc. 2. Data analysis: Provide energy usage reports and energy-saving recommendations through analysis of historical data. 3. Remote management: Realize remote control and parameter adjustment of energy storage devices through cloud computing platforms. 4. Predictive maintenance: Combining big data analysis to predict potential equipment failures, conducting maintenance in advance, and improving equipment operational efficiency.
Screenshots
Verdict
The clearest difference is update cadence: KorEMS at every 4 weeks against WANJIN ESS's every 6 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.
WANJIN ESS ships an update every 6 months, KorEMS every 4 weeks. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.
| Parameter | WANJIN ESS | KorEMS |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 24 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Anhui Udan Technology Co., Ltd. | 珠海科创储能科技有限公司 |
In-app purchases
WANJIN ESS
No in-app purchases
KorEMS
No in-app purchases









