# OpenAirLog vs Request Kalender

The clearest difference is in-app purchases: Request Kalender at none against OpenAirLog's 6. OpenAirLog's advantage is update cadence (daily vs every 3 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OpenAirLog sells 6 one-off in-app purchases. Request Kalender asks for nothing beyond the download.

OpenAirLog ships an update daily, Request Kalender every 3 days. The most recent releases landed on September 26, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | OpenAirLog | Request Kalender |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 days |
| Size | 83 MB | 1 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Markus Maucher](https://appshunter.io/developer/1883492281) | [Lukas Kessler](https://appshunter.io/developer/6792858520) |

## What reviewers say

### OpenAirLog

[App page](https://appshunter.io/ios/app/openairlog/id6760256695)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenAirLog mit 1 € unterstützen | $0.99 | one-time |
| OpenAirLog mit 2 € unterstützen | $1.99 | one-time |
| OpenAirLog mit 5 € unterstützen | $3.99 | one-time |
| OpenAirLog mit 10 € unterstützen | $8.99 | one-time |
| OpenAirLog mit 20 € unterstützen | $17.99 | one-time |
| OpenAirLog mit 50 € unterstützen | $44.99 | one-time |


### Request Kalender

[App page](https://appshunter.io/ios/app/request-kalender/id6792858518)

**Features:** macOS Compatibility, Safari Extension

**In-app purchases:** none


## Frequently asked questions

### Is OpenAirLog free?

OpenAirLog is free to download, with in-app purchases available.

### Is Request Kalender free?

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

### Do OpenAirLog or Request Kalender have ads?

Neither OpenAirLog nor Request Kalender shows ads.

### Which is updated more often, OpenAirLog or Request Kalender?

OpenAirLog ships an update daily, and Request Kalender every 3 days. Most recently, OpenAirLog was updated on September 26, 2026 and Request Kalender on September 23, 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.*