Comparison

KeepKnow vs YJC Power

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

Head to head

About

KeepKnow

Features

Read full description

The KeepKnow App connects to smart battery systems via Bluetooth and Wi-Fi, enabling real-time monitoring, remote control, and multi-battery management for energy storage applications

About

YJC Power

Features

Read full description

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 — 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

KeepKnow4 screens

YJC Power4 screens

Verdict

The call

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

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

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

ScorecardNo meaningful differences

KeepKnow versus YJC Power: the parameters behind the verdict, then further details
Parameter	KeepKnow	YJC Power
Price	Free	Free
Update frequency	Every 3 months — better	Every 4 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	13.0	13.0
Further details — not scored
Size	48 MB	42 MB
Age rating	4+	4+
Developer	KeepKnow New Energy Limited	Shenzhen Yujiaocheng Technology Co., Ltd.

In-app purchases

None

KeepKnow

No in-app purchases

None

YJC Power

No in-app purchases

Questions

Is KeepKnow free?

KeepKnow 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 KeepKnow or YJC Power have ads?

Neither KeepKnow nor YJC Power shows ads.

Which is updated more often, KeepKnow or YJC Power?

KeepKnow ships an update every 3 months, and YJC Power every 4 months. Most recently, KeepKnow was updated on November 5, 2026 and YJC Power on November 5, 2026.