# Kiot vs ST4U

The clearest difference is update cadence: ST4U at every 3 weeks against Kiot's every 2 months. Kiot's advantage is iOS requirement (13.0 vs 15.1). 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.

Kiot ships an update every 2 months, ST4U every 3 weeks. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Kiot | ST4U |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 98 MB | 35 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kiot Communications LLP](https://appshunter.io/developer/1367918709) | [HePoJ](https://appshunter.io/developer/1596658297) |

## What reviewers say

### Kiot

[App page](https://appshunter.io/ios/app/kiot/id1367918710)

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

**In-app purchases:** none


### ST4U

[App page](https://appshunter.io/ios/app/st4u/id1596658055)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kiot free?

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

### Is ST4U free?

ST4U is free to download, with no in-app purchases.

### Do Kiot or ST4U have ads?

Neither Kiot nor ST4U shows ads.

### Which is updated more often, Kiot or ST4U?

Kiot ships an update every 2 months, and ST4U every 3 weeks. Most recently, Kiot was updated on October 15, 2026 and ST4U on October 9, 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.*