# Zio® Mobile App vs Zeliox ZAI4

The clearest difference is iOS requirement: Zeliox ZAI4 at 12.0 against Zio® Mobile App's 26.0. 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.

Zio® Mobile App ships an update every 11 months, Zeliox ZAI4 every 7 months. The most recent releases landed on September 10, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Zio® Mobile App | Zeliox ZAI4 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 7 months** |
| Size | 51 MB | 34 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [RGB Spectrum Inc](https://appshunter.io/developer/1564256477) | [Zeliox](https://appshunter.io/developer/1478320738) |

## What reviewers say

### Zio® Mobile App

[App page](https://appshunter.io/ios/app/zio-mobile-app/id1564256475)

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

**In-app purchases:** none


### Zeliox ZAI4

[App page](https://appshunter.io/ios/app/zeliox-zai4/id6737747373)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zio® Mobile App free?

Zio® Mobile App is free to download, with no in-app purchases.

### Is Zeliox ZAI4 free?

Zeliox ZAI4 is free to download, with no in-app purchases.

### Do Zio® Mobile App or Zeliox ZAI4 have ads?

Neither Zio® Mobile App nor Zeliox ZAI4 shows ads.

### Which is updated more often, Zio® Mobile App or Zeliox ZAI4?

Zio® Mobile App ships an update every 11 months, and Zeliox ZAI4 every 7 months. Most recently, Zio® Mobile App was updated on September 10, 2026 and Zeliox ZAI4 on September 7, 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.*