# Z vs Smart Pillow Pro

The clearest difference is iOS requirement: Smart Pillow Pro at 13.0 against Z's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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, Smart Pillow Pro every 4 weeks. The most recent releases landed on September 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Z | Smart Pillow Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Size | 34 MB | 15 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [文 周](https://appshunter.io/developer/1690564319) | [师松 梁](https://appshunter.io/developer/922518056) |

## What reviewers say

### Z

[App page](https://appshunter.io/ios/app/z-hearing/id6449798347)

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart Pillow Pro

[App page](https://appshunter.io/ios/app/smart-pillow-pro/id6757741789)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Z free?

Z is free to download, with no in-app purchases.

### Is Smart Pillow Pro free?

Smart Pillow Pro is free to download, with no in-app purchases.

### Do Z or Smart Pillow Pro have ads?

Neither Z nor Smart Pillow Pro shows ads.

### Which is updated more often, Z or Smart Pillow Pro?

Z ships an update every 3 weeks, and Smart Pillow Pro every 4 weeks. Most recently, Z was updated on September 15, 2026 and Smart Pillow Pro on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*