Z vs Hearing test instruments
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Z
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Users can use the app to set up the audio device's features, including volume level, noise reduction adjustments, Hertz settings, etc., as well as take a listening test to create a personal audio map, and the results of the listening test can be synchronized to the iPhone's Health, and the personal audio syntax can be applied to the EOs on the audio device, which are automatically adjusted according to the individual listening parameters and, thanks to the customization, the user can hear more detailed information. enable the user to hear more detailed information.
Hearing test instruments
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Screenshots
Verdict
The clearest difference is iOS requirement: Hearing test instruments at 12.1 against Z's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Z ships an update every 3 weeks, Hearing test instruments every 5 weeks. Both last shipped on September 15, 2026.
| Parameter | Z | Hearing test instruments |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks β better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 12.1 β better |
| Further details β not scored | ||
| Size | 34 MB | 48 MB |
| Age rating | 17+ | 4+ |
| Developer | ζ ε¨ | Cemho Medical Technology (Guangdong) Co., Ltd |
In-app purchases
Z
No in-app purchases
Hearing test instruments
No in-app purchases
