123SmartBMS vs iiLink
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
iiLink
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
123SmartBMS ships an update monthly, iiLink fortnightly. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | 123SmartBMS | iiLink |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (21 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 21 — better | — |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 190 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Albertronic B.V. | 长伟 李 |
In-app purchases
123SmartBMS
No in-app purchases
iiLink
No in-app purchases









