Comparison

Yi BMS vs Aray Ess

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

Head to head

Yi BMS

YiFang BMS management

Monitor HV storage anytime.

Free

🔧 Utilities

No ratingsView app →

About

Yi BMS

Features

Read full description

This app connects to the BMS of Yifang battery pack via bluetooth, you can easily check the status of the battery, including voltage, current, temperature, alarm status and other data, and you can set the battery's operating parameters.

About

Aray Ess

Features

Read full description

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.

Screenshots

Yi BMS4 screens

Aray Ess4 screens

Verdict

The call

The clearest difference is ads: Aray Ess at none against Yi BMS's shown. On price, update cadence, 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

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

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on October 8, 2026.

Scorecard1 real difference · 5 level

Yi BMS versus Aray Ess: the parameters behind the verdict, then further details
Parameter	Yi BMS	Aray Ess
Price	Free	Free
Update frequency	Every 3 months	Every 3 months
Ads	Yes	No — better
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	12.0 — better	13.0
Further details — not scored
Size	32 MB	29 MB
Age rating	17+	9+
Developer	Shenzhen Yifang new energy technology Co., Ltd	深圳市傲雷新能源科技有限公司

In-app purchases

None

Yi BMS

No in-app purchases

None

Aray Ess

No in-app purchases

Questions

Is Yi BMS free?

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

Is Aray Ess free?

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

Do Yi BMS or Aray Ess have ads?

Yi BMS shows ads; Aray Ess does not.

Which is updated more often, Yi BMS or Aray Ess?

Yi BMS ships an update every 3 months, and Aray Ess every 3 months. Most recently, Yi BMS was updated on October 8, 2026 and Aray Ess on October 8, 2026.