Comparison

Aray Ess vs Ultra BMS

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

Head to head

Aray Ess

Monitor HV storage anytime.

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.

About

Ultra BMS

Features

Read full description

A battery management software

Screenshots

Aray Ess4 screens

Ultra BMS4 screens

Verdict

The call

The clearest difference is update cadence: Ultra BMS at weekly against Aray Ess's every 3 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

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

Aray Ess ships an update every 3 months, Ultra BMS weekly. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

Scorecard1 real difference · 5 level

Aray Ess versus Ultra BMS: the parameters behind the verdict, then further details
Parameter	Aray Ess	Ultra BMS
Price	Free	Free
Update frequency	Every 3 months	Weekly — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	13.0	13.0
Further details — not scored
Size	29 MB	30 MB
Age rating	9+	4+
Developer	深圳市傲雷新能源科技有限公司	新平罗

In-app purchases

None

Aray Ess

No in-app purchases

None

Ultra BMS

No in-app purchases

Questions

Is Aray Ess free?

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

Is Ultra BMS free?

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

Do Aray Ess or Ultra BMS have ads?

Neither Aray Ess nor Ultra BMS shows ads.

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

Aray Ess ships an update every 3 months, and Ultra BMS weekly. Most recently, Aray Ess was updated on October 8, 2026 and Ultra BMS on October 14, 2026.