Comparison

Aray Ess vs YJC Power

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

Head to head
About

Aray Ess

Features
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Aray ESS is a smart monitoring and management platform designed for high-voltage energy storage devices. By logging in with an assigned account, users can monitor device operation in real time, improve O&M efficiency, and ensure system safety and stability. Main features: Device Monitoring: Real-time view of core data such as voltage, current, and power. Log Recording: Supports error log queries and device operation history tracking. Safety Management: Instant alerts for abnormal status, helping users quickly locate issues. Account Login: Simply use the account assigned by your company to access your dedicated hardware device. Wherever you are, Aray ESS enables efficient management of your energy storage system, improving reliability and safety.

About

YJC Power

Features
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YJC Power lets you monitor and manage lithium battery BMS devices from your phone. Connect via Bluetooth or Wi-Fi to view real-time cell voltages, current, temperature, SOC, and protection status โ€” all in one place. Key Features Bluetooth & Wi-Fi dual-mode connection Real-time monitoring: cell voltage, charge/discharge, MOS temp & protection state Full parameter configuration: over-voltage, under-current, equalization, temperature protection, and more Energy storage system monitoring

Screenshots

Aray Ess4 screens
YJC Power4 screens

Verdict

The call

Aray Ess and YJC Power are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

Aray Ess ships an update every 3 months, YJC Power every 4 months. Both last shipped on November 5, 2026.

ScorecardNo meaningful differences
Aray Ess versus YJC Power: the parameters behind the verdict, then further details
ParameterAray EssYJC Power
PriceFreeFree
Update frequencyEvery 3 months โ€” betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.013.0
Further details โ€” not scored
Size29 MB42 MB
Age rating9+4+
Developerๆทฑๅœณๅธ‚ๅ‚ฒ้›ทๆ–ฐ่ƒฝๆบ็ง‘ๆŠ€ๆœ‰้™ๅ…ฌๅธShenzhen Yujiaocheng Technology Co., Ltd.

In-app purchases

None

Aray Ess

No in-app purchases

None

YJC Power

No in-app purchases

Questions

Is Aray Ess free?
Aray Ess is free to download, with no in-app purchases.
Is YJC Power free?
YJC Power is free to download, with no in-app purchases.
Do Aray Ess or YJC Power have ads?
Neither Aray Ess nor YJC Power shows ads.
Which is updated more often, Aray Ess or YJC Power?
Aray Ess ships an update every 3 months, and YJC Power every 4 months. Most recently, Aray Ess was updated on November 5, 2026 and YJC Power on November 5, 2026.

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