Comparison

123SmartBMS vs iiLink

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

Head to head
About

123SmartBMS

This app monitors and manages lithium battery packs, ensuring optimal condition and extended lifespan. It tracks cell voltages, temperatures, and currents, while balancing cells during charging. Connect via Bluetooth to view real-time battery status and control charging/discharging.

Highlights
  • Monitors cell voltages and temperatures
  • Tracks in- and outgoing currents
  • Balances cells during charging
  • Bluetooth connectivity for real-time data
  • Controls charge/discharge signals
  • Extends battery pack lifespan
Features
Read full description

123\SmartBMS is an easy to use yet advanced, modular BMS to keep your lithium batteries in perfect condition, increasing the lifespan of the battery pack. The system measures important data like cell voltages, cell temperatures and in- and outgoing currents. It also balances all cells to the same voltage during charging. The BMS supervises the whole battery pack and has two signal relays to indicate “allow to charge” and “allow to discharge”. These signal relays can control chargers and inverters with “enable”/”disable” signals or by connecting an energy efficient power relay to the signal relay. An example is the 123\SmartRelay. Easily connect your phone to the BMS using Bluetooth to see relevant information including state of charge, energy consumed, energy stored, in- and outgoing current, cell voltages and temperatures. With 123\SmartBMS, your battery pack is in safe hands.

About

iiLink

Features
Read full description

iiLink lets you manage your INNOV smart power and battery devices right from your phone. 【Key Features】 · Real-time telemetry: SOC, voltage, current, temperature, SOH and cell voltage with clear trend charts · One-tap BLE provisioning: securely send WiFi credentials just by being near the device — no manual commands · Threshold alarms: set custom voltage/temperature/SOC limits and receive local push notifications on anomalies · Role-based access: Operator / Admin / Super Admin roles for sub-user and device management · History records: review runtime curves to track long-term device health · Bilingual UI: full Chinese and English localization iiLink turns professional battery management into a single screen, so anyone can stay on top of their device health.

Screenshots

123SmartBMS4 screens
iiLink4 screens

Verdict

The call

The clearest difference is update cadence: iiLink at fortnightly against 123SmartBMS's monthly. 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

123SmartBMS ships an update monthly, iiLink fortnightly. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard1 real difference · 9 level
123SmartBMS versus iiLink: the parameters behind the verdict, then further details
Parameter123SmartBMSiiLink
PriceFreeFree
Rating4.5 (21 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings21 — better—
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size190 MB45 MB
Age rating4+4+
DeveloperAlbertronic B.V.长伟 李

In-app purchases

None

123SmartBMS

No in-app purchases

None

iiLink

No in-app purchases

Questions

Is 123SmartBMS free?
123SmartBMS is free to download, with no in-app purchases.
Is iiLink free?
iiLink is free to download, with no in-app purchases.
Do 123SmartBMS or iiLink have ads?
Neither 123SmartBMS nor iiLink shows ads.
Which is updated more often, 123SmartBMS or iiLink?
123SmartBMS ships an update monthly, and iiLink fortnightly. Most recently, 123SmartBMS was updated on November 1, 2026 and iiLink on November 6, 2026.

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