# KATIER vs ZPOI

The clearest difference is iOS requirement: KATIER at 11.0 against ZPOI'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.

KATIER ships an update every 22 months, ZPOI every 25 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | KATIER | ZPOI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 22 months** | Every 25 months |
| Size | 64 MB | 104 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [XIAOWAN SU](https://appshunter.io/developer/1563200451) | [SERVICEX S.R.L.](https://appshunter.io/developer/1215274302) |

## What reviewers say

### KATIER

[App page](https://appshunter.io/ios/app/katier/id1563200449)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZPOI

[App page](https://appshunter.io/ios/app/zpoi/id1641171326)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KATIER free?

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

### Is ZPOI free?

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

### Do KATIER or ZPOI have ads?

Neither KATIER nor ZPOI shows ads.

### Which is updated more often, KATIER or ZPOI?

KATIER ships an update every 22 months, and ZPOI every 25 months. Most recently, KATIER was updated on November 3, 2026 and ZPOI on October 27, 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.*