# OZ Pro vs ArchiCal

The clearest difference is update cadence: ArchiCal at weekly against OZ Pro's every 12 months. OZ Pro's advantage is iOS requirement (13.0 vs 16.4). On price 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.

OZ Pro ships an update every 12 months, ArchiCal weekly. The most recent releases landed on September 11, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | OZ Pro | ArchiCal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 12 months | **Weekly** |
| Size | 30 MB | 45 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | — | **iPhone** |
| Age rating | 17+ | 4+ |
| Developer | [shtibel](https://appshunter.io/developer/798863049) | [Balink](https://appshunter.io/developer/934317852) |

## What reviewers say

### OZ Pro

[App page](https://appshunter.io/ios/app/oz-pro/id6449184817)

**In-app purchases:** none


### ArchiCal

[App page](https://appshunter.io/ios/app/archical/id6780858713)

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

**In-app purchases:** none


## Frequently asked questions

### Is OZ Pro free?

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

### Is ArchiCal free?

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

### Which is updated more often, OZ Pro or ArchiCal?

OZ Pro ships an update every 12 months, and ArchiCal weekly. Most recently, OZ Pro was updated on September 11, 2026 and ArchiCal on September 22, 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.*