Comparison

Sunlink BMS vs i

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

Head to head

About

Sunlink BMS

Features

Read full description

Sunlink BMS is an intelligent battery management platform, which can support up to 20 strings of display. Using Bluetooth wireless connection to monitor detailed battery information in real time, such as charging and discharging voltage, charging and discharging current, pack temperature and cell temperature.Supporting bluetooth scanning connection, and bilingual display in Chinese and English.

About

i

Monitor your i-tecc+ LiFePO4 batteries with detailed insights. Track state of charge, capacity, power usage, temperature, and charge cycles. Essential for managing battery health and performance.

Highlights

Monitor state of charge
Track battery capacity
View power consumption
Check battery temperature
Record charge cycles
LiFePO4 battery information

Features

Read full description

i-tecc+ BMS is the perfect tool to get important information about your i-tecc+ LiFePO4 batteries, such as current state of charge, battery capacity, power consumption, temperature, charge cycles and much more.

Screenshots

Sunlink BMS3 screens

i4 screens

Verdict

The call

The clearest difference is update cadence: Sunlink BMS at every 3 months against i's every 19 months. Sunlink BMS also leads on iOS requirement (9.0 vs 12.0). 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

Sunlink BMS ships an update every 3 months, i every 19 months. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 6 level

Sunlink BMS versus i: the parameters behind the verdict, then further details
Parameter	Sunlink BMS	i
Price	Free	Free
Positive reviews	—	0.0% of reviews
Update frequency	Every 3 months — better	Every 19 months
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	9.0 — better	12.0
Further details — not scored
Size	35 MB	34 MB
Age rating	4+	4+
Developer	Shenzhen RF-star Technology Co., Ltd	i-tecc batteries GmbH

In-app purchases

None

Sunlink BMS

No in-app purchases

None

i

No in-app purchases

Questions

Is Sunlink BMS free?

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

Is i free?

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

Do Sunlink BMS or i have ads?

Neither Sunlink BMS nor i shows ads.

Which is updated more often, Sunlink BMS or i?

Sunlink BMS ships an update every 3 months, and i every 19 months. Most recently, Sunlink BMS was updated on October 4, 2026 and i on October 8, 2026.