# Arendum PRO vs ST24

The clearest difference is iOS requirement: ST24 at 15.6 against Arendum PRO's 17.0. 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.

Arendum PRO ships an update every 4 days, ST24 every 5 days. The most recent releases landed on September 6, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Arendum PRO | ST24 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 days |
| Size | 72 MB | 84 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Arendum LLC](https://appshunter.io/developer/1769580914) | [Shakhzod Akhmedov](https://appshunter.io/developer/1646929342) |

## What reviewers say

### Arendum PRO

[App page](https://appshunter.io/ios/app/arendum-pro/id6723866182)

**Features:** macOS Compatibility

**In-app purchases:** none


### ST24

[App page](https://appshunter.io/ios/app/st24/id6743488175)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Arendum PRO free?

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

### Is ST24 free?

ST24 is free to download, with no in-app purchases.

### Do Arendum PRO or ST24 have ads?

Neither Arendum PRO nor ST24 shows ads.

### Which is updated more often, Arendum PRO or ST24?

Arendum PRO ships an update every 4 days, and ST24 every 5 days. Most recently, Arendum PRO was updated on September 6, 2026 and ST24 on September 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.*