HACS vs GSL Smart ESS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HACS
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海尔空调销售选型工具 项目管理 管理自建项目和下级用户的项目。 项目设计 支持室内机、室外机等机型自动选型；支持户型模版，负荷自动估算，自动套用价格，生成项目报告。 产品查询 按照系列、型式、型号关键字查询产品参数，浏览产品详细参数。
GSL Smart ESS
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GSL Energy provides monitoring solutions for various high and low voltage battery system devices, supporting battery systems, residential energy storage, and commercial and industrial energy storage systems.
Screenshots
Verdict
The clearest difference is update cadence: GSL Smart ESS at every 9 months against HACS's every 19 months. HACS's advantage is iOS requirement (11.0 vs 15.6). 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.
HACS ships an update every 19 months, GSL Smart ESS every 9 months. Both last shipped on October 25, 2026.
| Parameter | HACS | GSL Smart ESS |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 19 months | Every 9 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | 北京优能易创软件技术有限公司 | SHENZHEN GSL ENERGY CO LTD |
In-app purchases
HACS
No in-app purchases
GSL Smart ESS
No in-app purchases
