# SVAB Quantum vs Zeliox ZAI4

The clearest difference is update cadence: SVAB Quantum at monthly against Zeliox ZAI4's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SVAB Quantum ships an update monthly, Zeliox ZAI4 every 7 months. Both last shipped on September 7, 2026.

## The numbers

| Metric | SVAB Quantum | Zeliox ZAI4 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 7 months |
| Size | 18 MB | 34 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [SVAB Hydraulik AB](https://appshunter.io/developer/1317241516) | [Zeliox](https://appshunter.io/developer/1478320738) |

## What reviewers say

### SVAB Quantum

[App page](https://appshunter.io/ios/app/svab-quantum/id1317241517)

**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 SVAB Quantum free?

SVAB Quantum 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 SVAB Quantum or Zeliox ZAI4 have ads?

Neither SVAB Quantum nor Zeliox ZAI4 shows ads.

### Which is updated more often, SVAB Quantum or Zeliox ZAI4?

SVAB Quantum ships an update monthly, and Zeliox ZAI4 every 7 months. Most recently, SVAB Quantum was updated on September 7, 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.*