hearSafe vs GSL Smart ESS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
hearSafe
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This app is designed to be compatible with a diverse array of zero-plus products, allowing you to seamlessly connect various Bluetooth-enabled electronic earmuffs or earplugs. With the ZeroPlus ComPro feature, it facilitates clear communication even in noisy environments, making it ideal for industrial, construction, and ground handling operations where both hands-free communication and hearing protection are essential.
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: hearSafe at every 3 months against GSL Smart ESS's every 9 months. hearSafe also leads on iOS requirement (13.0 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.
hearSafe ships an update every 3 months, GSL Smart ESS every 9 months. Both last shipped on October 25, 2026.
| Parameter | hearSafe | GSL Smart ESS |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 30 MB | 37 MB |
| Age rating | 17+ | 4+ |
| Developer | ZERO PLUS, K.K. | SHENZHEN GSL ENERGY CO LTD |
In-app purchases
hearSafe
No in-app purchases
GSL Smart ESS
No in-app purchases
