# Arendum PRO vs Salem Office

The clearest difference is iOS requirement: Salem Office at 15.0 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, Salem Office every 2 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Arendum PRO | Salem Office |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 72 MB | 47 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Arendum LLC](https://appshunter.io/developer/1769580914) | [Somnium LLC](https://appshunter.io/developer/1211998826) |

## What reviewers say

### Arendum PRO

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Salem Office

[App page](https://appshunter.io/ios/app/salem-office/id6760653864)

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

**In-app purchases:** none


## Frequently asked questions

### Is Arendum PRO free?

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

### Is Salem Office free?

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

### Do Arendum PRO or Salem Office have ads?

Neither Arendum PRO nor Salem Office shows ads.

### Which is updated more often, Arendum PRO or Salem Office?

Arendum PRO ships an update every 4 days, and Salem Office every 2 days. Most recently, Arendum PRO was updated on October 27, 2026 and Salem Office on October 31, 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.*