Keelin vs WANJIN ESS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Keelin
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Keelin-Beacon is connected to our hardware STB1 device via Bluetooth for convenience. The STB1 is a BLE5.0de high-precision temperature sensor recorder that collects the ambient temperature of the device and uses Bluetooth broadcast to achieve 24-hour monitoring via Keelin-Beacon. 1. The current temperature value, voltage value and RSSI of nearby devices can be viewed through Bluetooth broadcast data. 2, historical data information (temperature + voltage + time, the most cocoa storage 4 days of data), at the same time can export data. Can be applied to logistics management, supply chain, warehouse, terminal and personal asset management.
WANJIN ESS
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The EMS App supports the access and unified control of energy storage, photovoltaic and charging equipment. Support different operators' access, and completely isolate the data of each operator. Flexible generation of daily, monthly, and annual operating data reports and revenue data. For end users of energy storage, it provides power generation and power consumption data viewing, optimizes energy supply, and monitors energy equipment anytime and anywhere through instant reminders and remote access functions.
Screenshots
Verdict
The clearest difference is update cadence: Keelin at every 3 months against WANJIN ESS's every 6 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Keelin ships an update every 3 months, WANJIN ESS every 6 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.
| Parameter | Keelin | WANJIN ESS |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | 佳喜 肖 | Anhui Udan Technology Co., Ltd. |
In-app purchases
Keelin
No in-app purchases
WANJIN ESS
No in-app purchases
