# Zai vs One Step P.O.S

The clearest difference is iOS requirement: Zai at 13.0 against One Step P.O.S's 15.6. 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.

Zai ships an update weekly, One Step P.O.S fortnightly. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Zai | One Step P.O.S |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Size | 76 MB | 40 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mostafa Farahat](https://appshunter.io/developer/1790198767) | [sayyaf Alqahtani](https://appshunter.io/developer/1590886726) |

## What reviewers say

### Zai

[App page](https://appshunter.io/ios/app/zai-your-egypt-ai-expert/id6740486603)

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

**In-app purchases:** none


### One Step P.O.S

[App page](https://appshunter.io/ios/app/one-step-pos/id6745604948)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zai free?

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

### Is One Step P.O.S free?

One Step P.O.S is free to download, with no in-app purchases.

### Do Zai or One Step P.O.S have ads?

Neither Zai nor One Step P.O.S shows ads.

### Which is updated more often, Zai or One Step P.O.S?

Zai ships an update weekly, and One Step P.O.S fortnightly. Most recently, Zai was updated on November 8, 2026 and One Step P.O.S on November 5, 2026.

---

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